EvenGround.org a game server hosting company has recently upgraded from Xoops to the new and Improved Xoops 2.
EvenGround.org is using a lot of custom modules written by Ackbarr over at Ack!Soft to help manage servers, and process new account signups. Some of the cool things this site has:
3DBlack Theme (modified) Invision Power Board Module (from Koudanshi) IPB Skin - Borderline Dark (Modified) EvenNews Newsletter Module (by Ack!Soft) Game Server Admin Module - An awesome module that includes a heavily modified UglyGS Server Browser. (by Ack!Soft)