The Vietnam expansion for Battlefield: Bad Company 2 will be half price as part of next week's 'XBox Live Deal of the Week' promotion. Usually 1200 MS Points, you'll be able to grab it for just 600 MS Points from Tuesday 5th until Monday 11th April. An brilliant expansion to the game, adding five new multiplayer maps, new weapons, vehicles and achievements.
Other Battlefield discounts include:
Onslaught Mode - 200 MS Points, 50% saving on the usual 400
Battlefield 1943: - 600 MS Points, 50% saving on the usual 1200
Specact Upgrade Bundle - 240 MS Points, 50% saving on the usual 480
Kit Shortcut Bundle Pack - 600 MS Points, 50% saving on the usual 1200 - not that I'd recommend this, it's charging you money to unlock content you'll get from playing the game anyway.