Casio TV970 2.3" Handheld Color TV
Perfect
I bought this so I can watch football at work.  Its small and easy to hide from supervisors.  Its light weight so its easy to secretly transport it around.  Has a good picture, colors are nice, and also has good sound as well.  While other people are moping around missing the game, I'm cheering on my team!  Take that stupid bosses, AHAHAHAHAHAHAHA!!