Sure. Current HDTV's are essentially large monitors with TV tuners built in.
There are differences, mainly pixel density (or PPI).. The highest resolution TV you will get is 1920x1080, and it might be 50 inches. I have a 1920x1080 computer monitor and it's only 22 inches - meaning those 1920 pixels are smaller and closer together, thus the image will be sharper on the smaller display.
The lower pixel density is good for TV's, as the size of the screen is much more important, because you tend to sit several meters from the TV.. PC monitors have higher pixel density, and higher resolution because you sit closer to the screen, and it makes things like small text easier to read.
I wouldn't buy an HDTV for a computer if I was planning to do lots of coding, or anything involving reading much text etc.. but for games, or a media center, HDTV's are perfect (I have a 32" HDTV, which is 720p, or about 1280x720 resolution and it's great for films/games, it's fine for web-browsing, but not for too long)
Yep, I've got a 32" with 1366 x 768. It's nice for films and games, but for browsing the web the 768 height feels very small. – Rich Bradshaw – 2009-08-27T17:06:20.247