Time Lapse movies are really cool. Really. I got a nice shot of creating a time lapse movie when I moved to a new place. Here is how I did it.
WARNING: This is going to be a geeky post with lots of software downloads, hacks, and tweaks.
WARNING 2: Once you time-lapse, you can never go back (only fast forward).
UPDATE: the G10 has a CHDK build here.