Free League IV -- Alien RPG Colonial Marines Operations Manual and GM Screen 

Here we take a look at the lovely GM Screen and the Colonial Marines Operations Manual for the Alien RPG from Free League Publishing. The GM Screen has wonderful art on the player-facing side, and the GM's side is stacked with all the critical tables needed for combat in particular.
The Colonial Marines book is fantastic, providing a huge amount of history and detail on the Marines and their opposing forces, new character-creation options and talents for Marine characters, a huge amount of new gear, and a bunch of new vehicles and starships. On top of that it includes a large campaign designed for Colonial Marines characters, which I'm definitely looking forward to running someday (after finishing up the cinematic scenario boxsets).
For more info on the game, check out the official website here: www.alien-rpg.com/
This site has some useful resources for play, including form-fillable character sheets and a comprehensive character generator, including Marine characters: game-mother.com/