Sygic / Mapfactor (Still have to try Navitel for nm2 and nm3 maps) for offline maps
APN & Data Interruptor widget
Springpad (replaces dead Catch Notes. Damnit, I miss too much Catch Notes)
ES File Exp...
Another one I've been using is the Proximity Actions app
It works with the proximity sensor. You can define waving and holding actions. Eg. hold your finger 1s over the proxim...