I downloaded and played the Burnout Revenge and PGR3 demos from the Xbox Live Marketplace yesterday evening. The demos are obviously pretty short and limited, but unlike screenshots, they let you get a real feel for what the games are like.
The cars and landscapes in PGR3 are beautiful, but Burnout Revenge looks like more fun. It's so fast-paced, and the slamming-crashing-smashing action is awesome.
Oblivion has an interesting storyline, and breathtaking scenery, but as I suspected earlier, I know
it's going to get addictive, and I simply don't have that much time to spend on gaming. I'm looking more for short, quick, fun games that I can just play for an hour or so when I'm bored and have a little bit of time.
I'm going to try more demos from the Marketplace before I settle on what to finally pick up. It's a really nice way to sample stuff.