i have only had my N900 for about 5 days, but i am already fkinding that I have at least 5 apps on the dashboard.

They are usually gpodder, media player. a couple of conversations windows, email, a couple of browser windows, some sort of twitter feed (oauth making that fun at the mo), and xterm into my mythtv media centre.
oh, and i am usually signed into gtalk, msn, facebook chat, skype and ovi.

This is one beast of a device, and i haven't tweaked, tuned, or overclocked in any way, and I love it.