Personally I would be looking at a HD tv for sure,a couple or three of usb ports,a lot of the newer tv's have internet ready.( To be used as a monitor,need be,also a bonus).That is good for let's say net flicks,if you should choose, IMO after owning plasma and lcd,my favourite is lcd,but haven't tried led.
3D is not quite there" yet",it is but not a lot of programs. IMO and maybe never from what I've read and heard. The highest available processor is also a advantage to quicker and sharper images. Although they cost a bit more,well worth the money. Good luck on your entertainment hunting!!!