voice recorder, to do list, online banking, weather bug, news feeds, streaming radio, pandora radio, VNC, sports ticker, ebay mobile, etc (all free)
A lot of them are crap… they were free before the appstore via apptap installer (jailbroken) and now they want money (for instance, a flashlight app that just displays a white screen).
but there are a bunch worth buying (hold’em poker is real good imo)