Tear for browsing, canola for multimedia + Mplayer required, abiword for word processing, fbreader for e-books, mytube for youtube videos, GPE calendar and erminig if syncing to your google calendar, GPE to-do, GPE contacts, and GPE file manager, and for games sdl quake and opentyrian. A-GPS for a better Satellite fix, advanced-backlight for easier sound and brightness access,

That's my essentials!