Hi there,
I saw, as many of you probably have, Blaine appear to put his hand through a glass window. This has stuck in my mind. Please does any body know anything about this or is it another cheeky piece of film editing? thanks wizz

The Magic Café is not an exposure board, so it is generally considered "bad form" to ask for an explanation of the method behind specific illusions or tricks.
Also, it is unlikely that anyone working with David Blaine (and these would be the only people who know with absolute certainty exactly how it was done) would provide you an explanation.
That being said, my guess is that many young magicians have played with a simple magic prop found in lots of beginner's magic sets which uses the same principle Blaine most likely used to achieve the illusion.

Without giving anything away...the effect didn't use camera trickery, but by the same token...you wouldn't be able to duplicate this effect on Main Street, USA either.

This effect has been discussed in the "secret" areas of the Café, which you will have access to after 50 legitimate posts. Good luck, and welcome to The Magic Café, wizz..

Think card through window penetration...or basically any penetration like man through mirror

That's exactly what I was thinking