Battle Star Galactica is one of my favorite shows on tv. The BSG47 RP sim showcases the BattleStar Galactica ship and other ships. The impressive aerial maneuvers show some of the cool possibilities in Second Life:

BattleStar Galactica Cylon Centurion Avatar:

It looks like the combat system is provided by VICE which is a dogfighting system using Havok 4 physics engine.