I really want the PS3 to succeed, but I'm not impressed by the current crop of titles out there. It's underwhelming.
The only games off the top of my head that interest me are Mario Galaxy (any A-quality Nintendo games) and some of the FPS/sports games on the 360. Though the PS3 has much the same sports titles, graphically they're barely any better than the 360 versions.
About the backwards compatibility issue, the new 40GB lacks any form of it, and the 80 uses software emulation, which is updatable through firmware, but far from perfect. It is the 'old' 60GB model that has hardware compatibility.
Before I forget to ask, do the controllers have rumble now?
Mario Galaxy is Wii only, the main things coming up for PS3 are Uncharted: Drakes Fortune, then Metal Gear Solid 4, and also Unreal Tournament III. But I don't expect any of those to be all that big.
And while they have the new Dualshock 3 with rumble, they aren't adding it to the new game systems, so if you want rumble you'll have to buy a new controller. They should have added it to the40GB version to offset the the stuff they took out, but Sony loves the exquisite pain they recieve from constantly shooting themselves in the foot.