Here is another cool toy from XDA:
http://forum.xda-developers.com/showthread.php?t=354424
It is still at the beginning of its development, but looks promising. And it is already quite functional. It's a launcher program that divides the screen into three sections that can be scrolled horizontally with your finger. One section has common apps like calendar, camera, IE, etc. The next has contacts, and the last one seems to have a more complete list of miscellaneous apps. I've attached the cab (in a zip file) and a screenshot. Pretty cool. I'll be keeping an eye on this one.
Edit: Cab removed.