Allegro Sprite Editor  
0.8.1: Excellent! Now sporting all of the tools I need.

Saucelifter  
Difficult but fun! This game couldn't have been done better.

WormHole  
This is a nice screensaver and all, and you should take a look, but Beyonce's screensaver was one of the best all time! Also, it takes 100% and continues to do so even when it should not be running.