Lightbox JS v2.0 - Go check it out!
Use the comments on this entry to post and discuss bugs, questions, and troubleshoot the script. I'll be in and out of here.
3/31/06: I've Released a minor update v2.01 that fixes IE6 centering and smooths out the kinks in the resize transition. If you're looking for multi-line captions or keyboard navigation, expect another minor update this weekend.
4/4/06: New update v2.02 that keeps the layout in check when captions extend to multiple lines. Keyboard navigation has also been enabled. Lastly, the addition of a variable in the lightbox.js configuration section to control the speed of the resize transitions.