No arguments to those already suggested. I just purchased Nothing But the Best Series and am very impressed. He may not be the best for beginners, but his effects get the desired "No Way" reaction from the audience and he explains the theory behind how he constructed them and improved them over time, based on what his audience's reaction taught him about the effect. If you're looking for a DVD that takes you to the next level, you won't be disappointed!

Also, I like Liam Montier at Big Blind Medua (BBM), especially for beginners. Liam presents moves that he uses with tips to make them more effective based on his experience. His explanation is clear and the production is good. Plus, he is very cordial and upbeat in any email exchange I've had with him. Liam's DVDs will add tools to your toolbox!

For me as new to magic I really like:
Liam Montier in the different projects DVDs &
Dan Harlan in the Tarbell serie.

Daryl, Jay Sankey, Michael Ammar, Doc Eason in that order for me.

Jay Sankey is a great teacher whose enthusiasm is infectious

This is such a personal question.

Jay Sankey's material is hit or miss but his teaching is good and (to me) he's extremely entertaining even when I'm not going to actually learn the tricks he teaches.

Eugene Burger's philosophy of magic is, in many ways, similar to my own, so his DVDs teach me a lot about the behind the scenes of magic and the presentation of magic, whether or not I'm learning the tricks.

Doc Eason will show you tried and true "workers" and provide a lesson in how to *entertain* the audience.

So many great guys doing great things, and what works for one won't necessarily work for another. For instance, objectively speaking, Michael Ammar is a great magician and a great teacher--but his style doesn't speak to me as much as some of the others. That's not to say I don't like him, but he's not on my "favorites" list as he is on so many others'.

Richard Osterlind

Lorayne and Vincent.

Johnny Thompson is fantastic

Ammar, Sankey, Osterlind, & Vernon

I bought some stuff from them a long time ago when I had more money than self-respect. While Mr. Christian gives off a vibe of affability and approachability, there's less there than meets the eye. He's got some things right - he sems to have heard of Paul Harris advising people not to step on the moment of astonishment, and he wisely advises folks to slow down what they do. He can also be astonishingly inarticulate and too often teaches poor or utterly incorrect technique. He teaches a version of the Riffle Force that is vastly inferior to the technique found in Hugard's More Card Manipulations, No. 4 and in Expert Card Technique, and seems unaware of the technical refinement given the lesser version by Vernon in his Inner Card Trilogy. (Note: I've seen several famous performers do the Riffle Force incorrectly - it baffles me because the correct technique is just as easy and more deceptive). He shows a Marlo sleight that he calls "the Marlo fan control" (which was published by Racherbaumer in Card Finesse as The Old In-and-Out"), and his method is utterly, completely wrong. When he grips a double in preparation for Marlo's Miracle Card Switch, he shows that he has never seen the first chapter of Revolutionary Card Technique. I saw a video on Youtube of him exhorting folks about postures, movements, and "tics" which can betray the execution of a sleight. After a bit of fumbling, he reaches in the bag and comes out with the word "indicator", as if he never heard any magician or gambler call it a 'tell'. Some of those videos had some decent material, but there are better sources.

Oh, and GET OFF MY LAWN!

I must suggest Michael Vincent's "The Classic Magic of Michael Vincent", "Rhapsodies in Silver", "Elegant Deceptions" and "The Quest for Mastery". All four volumes span over a total of like 14 DVDs.

It's what I would consider the best high-end card course I've seen on DVD. His teaching style I find has some similarities with Lorayne (which is another awesome teacher as well) and he's paired with Chris Harding of Alakazam throughout the series, who is often asking useful questions and clarifications.
I wouldn't suggest the whole series to a complete card beginner. Yet, if you've worked your way through, say, the Royal Road to Card Magic, then this DVD series I think would be perfect.

It has an incredible amount of both "workers" and a bit more intricate and intriguing effects, which Michael drops on the audiences with incredible ease and naturalness (including what lot of people would consider routines full of knucklebusting moves). Includes discussions on routining, working in restaurants, has beautiful shows both close-up and stand-up/parlor, and all in all, if someone were to pick his ONLY card repertoire from those lessons, he/she'd be considered a real expert on card magic/manipulation, and could do a living off it

One DVD is ONLY dedicated to explaining the "basics done right" of card handling, which WILL correct some of the most common mistakes done when picking up a deck for deceptive purposes for the first time

After that, another teacher I liked on DVD was Darwin Ortiz (Nothing but the best series, and Penguin lecture). He's a particular fellow both in his presentation style and teaching method, yet the touches he channels through his explanations reveal incredible insight on how things work in the mind of laypeople and...well we all know it, Darwin is one of the best theorycrafters in magic today. I'd rather suggest you reading Ortiz's books, but his DVD material is excellent as well.
And hey, he created some of the most beautiful effects in card magic in my opinion.

I may have misunderstood the intent of the OP, but... I think the answer varies based on what is being taught. Here's what I personally think:
1) Ambitious Card or Cups and Balls - Daryl
2) Gambling Related Routines - Jack Carpenter
3) Coins - Eric Jones
4) General Card Routines - Darwin Ortiz

M. Ammar and Rocco!

Richard Osterlind is fantastic and inspiring

This a little tangential to the OP question, but several years ago I got a copy of Dan and Dave Buck's "The System" DVD cheap from eBay. It is flourishes and not magic per se. On that disk they teach with no words, just showing the moves in slow motion from different angles. I have to say that for me that teaching method was terrible. Even in slow motion it's hard to follow it through as you are looking down at your hands and trying to watch what is happening on the screen at the same time. Within a short time I find that the video is too far ahead of where I am and I can no longer follow, and I have to start over from the beginning. I compare that to a flourish I learned from one of the Best of Sankey DVDs, where he shows you what to do but also stops at each step and verbally describes it in detail. SO much easier to follow.

I think the whole System thing was a bit of a teaching experiment and I'm not saying they are bad teachers in general. I also haven't heard feedback from others on how it worked for them. But for me it was really bad. I don't have any of their other stuff. Hopefully it's better.

Ben

George Wilson, Sankey are my favorites

To mention only 3 is really not fair
I'd go with (no particular order):
-Michael Ammar
-Daryl
-Richard Osterlind
-Bill Malone
-Tommy Wonder
-Johnny Thompson
-Gregory Wilson
-Joshua Jay
-Jay Sankey
-Dan Harlan
-David Williamson
-Oz Pearlman
-Aaron Fisher
-Rick Lax
----------------------------------
Those were on the top of my head!
In my opinion these guys teach you not only tricks and methods, but how to be a magician!

I like Michael Ammar style of instruction.

Great tricks
Easy, clear, and concise explanations.

His Easy to Master Series is one of the best resources for quality magic in my opinion.

The best teachers on DVD I kept constant watching, maybe not even learn tricks just listen to what they said on magic as follows:
- The late Tommy Wonder
- Michael Ammar
- David Williamson
- Juan Tamariz

Other like Daryl, Malone and many others also very, very good. It just those gentlemen mentioned above I keep revisit and watch their DVDs more.

Besides, most of my current magic learning are from books solely, say revisit old books such as the Greater Magic...