So, I just found myself doing something I thought I'd never do - I bought a PS3. I really only bought it because I wanted a Blu-Ray player and it's the best one on the market since M$ has no intention of releasing a drive for the 360 like they did with HD-DVD. Dumb move IMO, since the external drive was by far the most cost-effective HD-DVD player on the market for 360 owners. I had plans to buy one until the format war ended. Still, it is a PS3 after all, so I might as well get some games for it too. I'm already planning on MGS4, since I really enjoyed the earlier games on my PS2 and it was one of the very few games that actually made me lament not having a PS3. I already own Assassin's Creed and CoD4 on the 360, so don't suggest those. This brings us to my question: Excluding those, what is the ONE game for the PS3 that you guys think I absolutely must have? Looking for something either Sony-exclusive or much better on the PS3 than on the 360.