PSP as a media device

I've been using my PSP more as a media device lately. Having moved further out of town I face a 45+min commute by bus each morning and night, and have found the PSP perfect for listening to music whilst writing/reading, and of late - watching TV shows on it. I've become quite enraptured with Dollhouse; it takes me about 1.5 trips to make it through an episode.

I've always used it for listening to music but since upgrading my memory card to a 4GB I can now comfortably fit music and video content on the stick. It's quite handy. It's been a while since I used it as a gaming console. Mind you it's good to have it there, should I be stuck and in need of some entertainment but needing to keep my attention still active (I think I could play Lumines and conduct dinner conversation at the same time; it's become second nature to me).

I don't think I'll be upgrading to the latest PSP 3000 any time soon as it doesn't have anything I particularly want or need, except that it's a bit more convenient in terms of size. But my original model works just fine.