After searching the forums, I couldn't find a catch-all for this one, which amazes me since it's one of my must have titles of '09.
For the unknowing, Dark Void is a third person shooter that basically plays as the Rocketeer mixed with any 50's serial martian movie. What has me most excited though is the pedigree of the development team behind this. The developer, Airtight Games, is made up of most of the team that worked on Crimson Skies: High Road to Revenge, one of my favourite Xbox titles of all time.
My description isn't really doing it justice. Just watch the videos here on Joystiq.
Number 3 is the one that makes me laugh giddily. Dog-fighting with a jet pack plus being able to UFO-jack the enemy craft makes this an easy sell for me. As well, the vertical cover battles, as seen in the 4th vid, definitely look interesting.