I have more applications available for my phone than I know what to use.
It came with a variation of microsoft office, that allows me to view word and excel files, and for a small fee, you can even edit or create them as well.
Then theres the N-gage application, that allows you to play N-gage games (unsurprisingly).
The app is free, but you have to buy the games.
The youtube application is free.
etc etc etc etc
http://n95blog.com/another-20-applications-for-your-nokia-n95/