XBLA & PSN Downloadable Games?

[Cronson]

I downloaded Zuma again last night and was surprised that I really liked it, like I think I'm addicted. So who else has come across a hidden gem (or a known awesome game) on either of these services? Give me some recommendations for those who have found something off the beaten path thats a really great game (I know XBLA has to have some good games since there's so many on there). Here are a few of my favorites:

Braid
Bionic Commando
A Kingdom for Keflings
Zuma

[deadlyaddicted]

i needed the legendary map pack on XBLA and had 800 points leftover so i got Castlevania:SOTN which i previous hadn't played XD.