Definitely a thread in need of revival (can't believe this thread got so lost). OK, so three just isn't enough...
PStart (Portable Launcher)
XYPlorer (File Manager)
foobar2000 (Audio Player)
Firefox Portable 3.0.10 (Internet Browser)
File Locator Pro (Search Tool)
EmEditor (Text Editor)
IMGBurn (Media Burner)
Batchrun (.bat Compiler)
FARR (Yes, I finally installed it mouser!)
Anyone else have some new favorite portable apps 1.5 years later.....