If in the near future if you're going to buy a new television, and you can also use a monitor with a gigantic resolution, and you can afford one and preferably find one on sale, I heartily recommend purchasing a high def projector. I get 1920x1080 on my dad's and it's across a portion of the wall so you can actually read it. It makes TF2 (and everything else) even more awesome. With all the plugs in the back I can do VGA, DVI, or HDMI and I can switch from TV to computer video with the push of a button. My next step is finding a way to switch between computer and TV audio. Right now I'm stuck on headphones for computer audio, but in a little while and a small investment I'll be able to go through our relatively cheap but more than adequate sound system.
We bought everything when it was on sale at Best Buy (I say we because I was there during the purchase [I was still a minor I think] because my dad grudgingly allowed himself to listen my advice after I explained to him at length about how I was in my second year of career training specializing in, among other things, technology relating to video and audio). They were out of the projector model they were displaying, and were switching the floor model to a new make or model so we actually bought the floor model at a significant discount. A lot of luck on our part I know, but I'd assume nowadays with recession pricing on luxury goods it might be cheaper to buy something similar than when we bought ours just before the recession.
The original projector burned out a few times while on warranty. It was sent in for repairs three or four times and eventually Best Buy simply replaced it. That one burned out once while on warranty and has had no problems since and hasn't even required a new bulb yet. Make sure you get a multi year warranty if it doesn't break the bank and also just ignore the replace bulb warning as it's probably the idea of some marketing genius. Also invest in some thick curtains for sunny days.