iPhone Applications I Couldn't Live Without

Instapaper (iTunes link) stores web articles you want to read later (great for desk/laptops, too)

iTalk (iTunes link) voice recorder

eReader (iTunes link) ebook reader

Flixter (iTunes link) find movies

FreeMemory (iTunes link) tells remaining battery percentage and frees up memory

Public Radio (iTunes link) streams lots of public radio stations (I plug iPhone into my car stereo when I go beyond radio signal range)

...and the beta versions of the applications we're testing over at FretBone!