Yeah...
My 42" HDTV has been hooked up to my computer for years. Infact when I got my TV it was $1,000 and at that time, that was an awesome black friday deal. (over 400 people in line)
But times have changed for me, I am married now and my wife doesn't like the computer hooked up to our primary TV so I got rid of my 19" LCD monitor and purchased a 37" HDTV to be my monitor/HDTV.