I only use my PPC to run a game called Hot Death Uno.

The N800's big, high resolution screen is mainly why I bought it ... to read eBooks. Only expensive PPCs have a screen near this size.

But the N800 also works great to watch movies and listen to music. Unlike the Apple iPods, no headphones are needed (but can be used). There are many music players available for the N8x0.

Check out this page for the Multimedia programs (and there are more not listed like xmms): http://maemo.org/downloads/OS2008/multimedia/

Hopefully someone else can post a more objective view about the N800 as I'm crazy about mine.