Okay, I am not a PS3 owner. But I know some things. I say get a HDMI cable (must have hdtv), for the full experience. And the PS3 is soon to get 'Home', A cool feature similar to the Sims.
Video here: [MEDIA]http://www.youtube.com/watch?v=kyquAXKeEI0[/MEDIA]
And I would say get Ps3 online games, and get Ps3 online. Pretty much it, from me.