Listening to music, web browsing, VNC to help my younger sis with her PC problems when im away, lots of notes-to-self, movies for trips and some gaming (cant stop playing mahjong and AislePiot).
Btw i use my n800 alot to SHOW OFF in front of iPhone/iTouch owners thanks to iTablet, PyAno, mplayer and of course, CANOLA2 !!!!