Star Trek DS9: The Fallen is also powered by Unreal. This game is shaping up into something rather cool, and will become another 3rd person game using Unreal's technology. You can play the game as Worf, Sisko or Kira (the in-game model actually has a nice a$$, IMO).
There is also a game called New Legends in development by The Infinite Machine, which is based in China. Some of the people at The Infinite Machine were responsible for the great levels etc. in Jedi Knight, so it should be very good.
I'm sure there are other titles in development, but I can't think of them right now. Also, don't forget that Epic are working on a new game with their next-gen engine, which will apparently have rolling terrain, lots of trees, curves, seemless transitions between inside/outside and who knows what else? They said they were aiming to beat the environments in Halo... =)
The future's bright. The future's UNREAL!
'The enemy can't press a button if you disable his hand...Medic!' (Starship Troopers)