When I went for a monitor upgrade to 1920x1080 60hz I wanted something that would double as my TV, play my Xbox 360 and be my PC monitor (its in my bedroom, recently lost the office to a lodger... but its extra cash...)
I ended up getting a samsung P2770HD. Its a 27 inch TV, DVI monitor and its got HDMI ports for everything else. At under £280 It was better value than a lot of 24 inch monitors, didnt need PC on to watch TV as the tuner is built in, its spot on size for movies in my bedroom, is decent quality (series 6 esque picture), 1080p 60hz and not forgetting 27 inch rather than 24.
And a GTX470 coupled with a good CPU steams along on it without a hiccup, usually with pleanty of AA to boot.
One happy customer here.