I am in the exact same boat as you. Having played on the PC since I was a teen and having played and been happy with the Wii for a couple of years, I bought a PS3 when the price dropped. Like you, based on friends' and reviewers' recommendations, I have been jumping from game to game trying to find something I enjoy. So far, I have only really enjoyed Fallout 3 (which I could have gotten for the PC anyway).
I am waiting for Dragon Age: Origins (which releases in a couple of days--two weeks earlier on the PS3 than on the PC) to see if BioWare can create a truly great roleplaying experience like they did with Neverwinter Nights and Baldur's Gate on the PC. If this game doesn't do it for me, I fear the PS3 will be relegated to the role of a BluRay player for the majority of its use.
