First in the Duke Nukem Trilogy (all of which are to be released on the PSP and DS) is DN Critical Mass, scheduled for some time late-2009. While pics from the other day finally put a face to the game, here's some actual gameplay footage for both versions. To my knowledge, it's going to be the first time we actually get to see the game in action.
Walking us through some info for the game is Apogee's Terry Nagy. In the interview, he gives us a low-down on the game's many features and elements. Game modes, weapons, levels, and even a slight hint of the overall story arc.
There's an interesting part towards the end though. When asked about the release of the games in the trilogy, Nagy's a bit hesitant to reveal the details. From what it seems, the games will be released within a few months of each other.