Elite Force was a re-skin of Quake II or III. It's still one of my more favorite Star Trek games, but that might be saying something in and of itself. Especially since I was/am not a Voyager fan.
Starfleet Command and Elite Force were probably my favorite of the games I've played so far. After playing Mass Effect, though, it made me wish the team that had made that game had made a Star Trek game before EA took them over.