I recently just went out and bought a 32" Sanyo Flat Screen HDTV for my gaming. Amazing TV for $447.00 and yes only 720p.
Instead of spending $20 at walmart, i bought an HDMI Cables on Ebay for 4.99 and WOW It's amazing!
NHL 09, Madden and like every game just has such a bright rich color with amazing sound quality almost like surround sound. Even the graphics looks enhanced without the crappy mega pixels showing great. O and i hooked it up to my PS3 if you were wondering the system.
If you have an HDTV with at least 480p Mega pixels get an HDMI Cables its amazing!