Metal Gear Solid 4 - Best game this generation, so far. It also has Metal Gear Online included. Free online mulitplayer play.
Resident Evil 5 - probably one of your friends has it, and it's a blast to play online co-op (especially for free on the PS3)
If you like FPS get Killzone 2 and enjoy the heck out of it playing multiplayer online, for free.
Resistance 2 is also a great FPS. It owns other FPS like Halo 3, don't let anybody tell you different.
Careful with Valkyria Chronicles. I own it, I love it, BUT I also recognize it's not a game for everyone. It's a demanding game (read : it can get frustrating some times) and the story and drama are very japanese and anime like. Try it before you buy, watch some videos, video reviews, etc.
Street Fighter 4 if you're very into Street Fighter kind of games (read: you played old SF/Capcom fighters and you didn't suck) also enjoy it online for free.
Dead Space is a great game. It's worth the money.
Fallout 3. At least 100 hours of gameplay if you're into that.
Warhawk. If you love 3rd person shooting and multiplayer online (this game is only multiplayer and while it can be played offline with up to 3 other friends that's totally pointless. Get online for free and have a blast, it's an awesome game with 3 "booster packs" you can buy really cheap on the PS Store which add extra maps and vehicles. Worth every damn cent. The game is also available for just $20 on the Store)
Anything concerning the PS3 hardware and other stuff I'm sure you can get the info from any of your friends. I'll give you some useful links anyway:
http://blog.us.playstation.com/ All news PS3.
http://www.console-exploits.com/forums/showthread.php?s=0dec4729b9367939d25c022b7b2d4d73&t=9974 Some PS3 tricks.
http://www.allps3themes.com/ Lots of themes.
http://www.us.playstation.com/Support/SystemUpdates/PS3 Firmware updates. You can download them on your PC to an USB drive. It's generally faster and you don't have to wait for your PS3 to finish downloading it.
http://www.edepot.com/playstation3.html#PS3_Model_Differences Everything about PS3 models.
http://tversity.com/
TVersity. Stream any video/audio content from your PC/laptop to your PS3. TVersity can also download and stream several podcast shows like X-play and gametrailers. Make your PS3 the ultimate media center.







