The current scripts (i've been maintaining a few) should definitely be in the autobuilds as they cover the majority of the uses of chdk.
UBASIC/Scripts - CHDK WikiCurrent
Note to script authors and users. Try to make screenshots or post example pictures of your scripts in action.
Scripts recommended for use with Canon S5 IS and or Digic III processors
* Ultra Intervalometer (best script)
* HDR time lapse (Starts at 300 as default for pictures. Easier to understand in some respects than the Ultra Intervalometer. Someone needs to find a way to combine the 1st and 2nd scripts' user features as the 1st script doesn't show what's going on, rather just shoots. The second script tells you delay for 10 seconds so at least you know you're still taking a shot)
* Multipurpose Motion (Sexy script. Could use for monitoring, or even photo shoots for banquets and such.)
* Zoom Shoot! (Zoom takes a shot and so forth, not sure why you would want this script as slideshow programs allow you to zoom in on pictures....)
* Long Exposure Intervalometer (Its purpose is for NIGHT shots. Takes long exposure shots continuously for applications such as night time time-lapse or to take image stacking shots for astrophotography.)
* Lightning script -- fudgey (Lightning script which captures quick successions of light bursts.)