The DBP games (and the possible Summer Uprising) Games do look quite awesome. I'm glad to see talent taking off on XBLIG!
On the topic of current games,
Sum Fighter is just fantastic. The stories are goofy, but fun, the "hidden characters" are enjoyable to play as, along with the main cast, the animations for their attacks are well done... it's a very well polished game. The only slightly glitchy thing I've encountered is the fact that you can Re-Re-Re-Re confirm your character select choice over and over again, and pausing after a round victory does nothing (the game will continue on to the next screen.) Those are pretty minor concerns (sorry
fernoca, wish I could help with your issue!

)
I've gotten a few local matches in with family, and they enjoy it, as well. It really could be a Cartoon Network game spinoff, or some other modern childrens cartoon. Minus the odd amount of Blood on defeated opponents, lol (Or maybe they're getting tomatoes tossed at them? Spray paint?).
There's so few puzzle-fighter-a-like games that actually work, so I'm happy to see this one hit so many of the right buttons.