I currently (sort of) have 3 notebooks:
1) Development machine - HP Pavillion ZE... not sure. It's old. The sound card just blew out so I need to either order one or get a new laptop. It also doesn't charge batteries, so it has to always be plugged in.
2) Dell Latitude D600: Is slower than HELL. Video playback tops out at like 10 fps on a good day. In all fairness, though, I might not have the correct video drivers installed. PC-Card interface is broken on that one, though, so it has to run everything on USB, which rules out recording with it (I generally use an Audigy PC-card soundcard for recording on notebooks).
3) (I'm ordering for my own birthday this afternoon) is a C-64 that I'm going to try to make mobile somehow. Either that or a GeoBook or one of those sweet laptops they're giving to poor children in Africa.