I have a 50 inch RP LCD TV. It has 2 spots for monitor in. I really like using this TV because it allows you to split the screen in 2 so I can watch TV on half and work on the other.
As far as burn in goes, I never heard of LCD having burn in problems, I was under the impression it was mainly a Plasma/CRT problem. Persistant may occur, but this can normally be corrected by showing a white screen for a little while.