While it's still very much still a work in progress, this trailer for An Honest Liar looks like a film I really want to see.
I'd forgotten that Happy Days clip - good to see that again. How funny.
I'm a great admirer of James Randi's work, both as a magician and as a broadcaster, and beyond that, as a scientist, skeptic and quackbuster, and with the James Randi Educational Foundation.
It looks like director Justin Weinstein has already compiled a series of interviews with the key players and the voices you want to hear, from Richard Wiseman to Penn & Teller, and he's also sourced a lot of relevant clips - though some licensed, better quality footage there would certainly help.
There's a Donate button on the film's official site, if you think you can help.
Several Little Bleeders sent me the link to this trailer, but iTricks got there first. Thanks to you all.