It was the first game I saw for the PS3 that made me want one, way back at E3 2005. Of course, it doesn't look as good now as it did then, since all the videos that were supposed to represent how the games would really look were ridiculously better than what we're actually getting.The fact that it's just a pretty good 6 hour adventure game is a bummer. Both Lair and Heavenly Sword have failed to be the expected killer titles people were hoping for.
The demo didn't especially impress me with anything, but it looked fun. It'd be worth a $5 rental, but definitely not a $60 purchase.