Allready Portable Apps
I know everyone here has a plethora of apps that were made portable, but there are loads of programs that weren't designed to be run off a flash drive that can and do. It'd be nice to get a list of such programs going, i know of a few, but definitly not all of them.
The one that I can't live without:
Bloodshed Dev C++ 5.0b - C++ IDE
http://www.bloodshed.net/devcpp.html