[UPDATES] - Rui follows up yesterday's contributions - He writes:

You can see David Blaine performing the levitation here http://www.artbell.com/mediafiles/BlaineLevitation.mpg, and some good pictures of spooky ice here http://www.artbell.com/letters48.html.

I feel compelled to add that although I have never listened to Art Bell's show, I ahve heard he's not the most incredulous person. However, as I have seen these ice spikes form myself, the links to images are worth posting.