SNEAK ATTACK. Just because its fun. UMD any healing, CC stuff, etc

Fighter//Rogue
UA Fighter, instead of Feats get SA.
Rogue for all the greatness of rogue.

Level 10: 11 SA dice, 8+int skills, good fort+ref, D10s, classic build for gestalt, and your meat shield friend for a flanker. Just because it is funny.