Game Library = A handful of really solid first party games that appeal to a wide range of people. Resistance, Motorstorm, Heavenly Sword, Uncharted, Ratchet and Clank. All solid games with Uncharted being the real standout among them. Most 360 owners would die to have that diverse group of games on their console.
Online Game Library = Super Stardust HD is awesome. Calling all Cars is fun.
Online Community/Store = People who don't own PS3's like to act like they know what it's like to play games online on it. The truth is a large percentage of people playing online now have headsets, and this is most obvious in recent games like COD4 and Burnout Paradise. Voice is much clearer than 360 games online as well. Newer games like Paradise offer full access to your friends list while playing the game, and allow you to send messages and do all those friends related activities from the XMB. Of course no one knows about this because no one is told about it.
Also, dedicated servers for Sony's first party games means a growing distinction will be noticable going forward when compared to the pay to play service of Xbox Live.
Controller = It's identical to the dual shock 2, but now it has triggers and sixaxis capabilities. The Dual Shock 3 is awesome, and brings the controller to a finished state it should have been at launch. Triggers aren't quite as comfortable as the 360 ones, but the analog stick works better in a lot of games, and the R1 and L1 buttons feel better than the 360's clicky alternatives.
The Fans = Sony fanboys are every bit as insane as 360 fanboys. Both argue over stupid things, and waste their time getting nowhere doing it.
Bluray Playback = It's the best bluray player on the market, and it just so happens to be the high definition disc format of the next decade. How nice of them to put that in my PS3. Kinda makes the purchase of one seem quite sensible for almost anyone who owns or might own an HDTV. Hmm, I wonder if that might help them sell this machine throughout the world in the next decade? Hmm.
Reliability = The PS3 is as reliable as could be expected for a very high tech machine. Compared to the 360's utter misery in this department, it's increasingly becoming the holy land for burned 360 owners who went through a handful of machines in the first two years. Expect to see the transition become more common as the generation progresses.