I had a TV in my room, and I was quite glad of it. Not because I'm a complete couch potato but because I liked having it on in the background - it made me feel less lonely at the beginning when I had a bit of homesickness! I didn't get great reception and neither did my housemates with TVs but then we were on the bottom floor of a 5 floor building which probably didn't help.
As far as I know you can only really get channels 1 - 5 if you're lucky. Freeview doesn't work in Bath at the moment, either.
Personally I liked having my TV because it had a built in DVD player. I know you can watch DVDs on computers but I find its never really the same, and it was really fun to have all my girly housemates piled onto my bed whilst watching Friends or Miss Congeniality or something!