How is the TV out?
I'm really looking forward to Valkyria Chronicles, Knights in the Nightmare, and Metal Slug XX. Being able to play these games on my TV would be awesome.
Added benefit: If you have a PS3, you can also link a PS3 Sixaxis or DS3 controller to the PSP Go, and play PSP games on your TV with a full sized controller.
Side note, the Composite cable cannot be used with PSP Games, only with the photos, web, videos, etc. Need a Component cable for games.