TV models
There are certain models that I can generally recomend for most situations.
The Samung 650 serires LCD are very good for the money and can be found in 40", 46", and 52"
The model number would read SAM ln(40,46,52)a650.
If you want a plasma, the Panasonic 800 and 850 series are good also
The model number would be Pan th50pz800u
If you want a really good small TV, the Son kdl32xbr6 is about the best I know of. It might even be overkill for the size.
Still, it is probably best to let me know the specifics of the room so I can make a better suggestion