Hey, how'd you know I just got a ps3?
Been using it for blu-rays so far, still deciding on what game to get first...
Haha, it's a great blu-ray player, that's for sure.
I would for sure try COD4, it's a lot of fun. Metal Gear Solid 4 is my personal favorite. Metal Gear Solid 4 is third person (unlike Call of Duty 4, which is first), so the gameplay is slightly different. I would consider it more difficult to learn to play, but not frusturating, and once you get the hang of it, you'll have an absolute blast. The weapons are great (M4 with a silencer and masterkey/granade launcher is my weapon of choice ... but there are TTOOONNNSSSS of great weapons to choose from), your interaction with the environment is amazing, the soundtrack is the best sounding game I've heard (and where you truely use sound as one of your tools). There is a big story behind it, that I've only partially gotten into, but you can always press skip and not watch the story. "Codecs" and "Mission Briefings" are really all you need.
I started playing it over the summer, and got really into it. After you beat the game, you'll want to go back and earn "emblems" playing the game with different strageties. Metal Gear Online is a ton of fun too. They came out with the "Gene" expanision pack that has absolutely brilliant maps.
Anyways, I'm rambling, I think this is a must have game, where beating it the first time only opens the doors to the rest of it. I actually recommend picking up their strategy guide (the official one), as it is written well and has some good tips.
Ratings/Reviews from Wikipedia:
http://en.wikipedia.org/wiki/Metal_Gear_Solid_4:_Guns_of_the_Patriots#Critical