This weekend I went to the FAVA cinemathon (gorgeous poster here courtesy of superstar graphic designer Vikki), and damn if I didn't completely fall in love with scratch animation.
Tables were set up around the concession area where you could draw on or scratch into 35mm film. The film scraps were then looped together, and projected onto the screen behind the bands.
The only band I saw was Electricity for Everybody!, and they were great. Multiple projections of colours and carefully planned lines swirled behind them, creating a truly amazing atmosphere. I'm completely obsessed with this needing to be done at way more shows, because it really elevated the live music experience.
From Harrison Stark comes this nice piece that pretty well illustrates what was going on. Except - think multiple overlapping projections.