Entropy (80 MSP) [...] is the most beautiful XBLIG in three dimensions that I've laid eyes on. (thexblig.com)
[...] the best controlling first-person game on the platform. It even looks good too [...]. (indiegamerchick.com)Buy Entropy on XBox.com
Some smaller or work-in-progress projects and also some code snippets that you might find useful can be found on Github.