Major Nelson of the clan Hryb sends word that free DLC is available on XBLM for three very different types of games.

Trivial Pursuit: Hundreds of new questions for movie buffs
Tomb Raider: Underworld: Designer costume pack, created by designers and voted for by Tomb Raider fans
F.E.A.R2: "Toy Soldiers" Map Pack, where players are inches tall and battle in a "pinball machine, a hospital lab room, and a playground sandbox." OK, that actually sounds cool
Go ahead, grab those and get to thinking, dressing and killing.