I was recently shown the SmoothGallery javascript picture carousel and I really like.  If you need a simple way to display pictures and do some pretty flashy things quickly this is your best bet. I only ran into a few issue.

1) I had to run my JQuery code in no conflict mode. Which is a very simple change.

var J = jQuery.noConflict();

Then replace all your #’s with J.

2) I had an issue in IE7 where my drop down menu’s would go behind the SmoothGallery module. It turned out to be a very simple z-index issue and making sure the menu was not absolutely positioned.

Other then those quick things I had a very nice fully functional picture gallery up and running in minutes.  It was also very refreshing to see a library with very simple setup instructions.