There are currently a whole of of deals and sales of note on Xbox Live Arcade. Check out the following items and see if anything catches your fancy.
Deal of the Week (Xbox Live Gold)
Double Fine Happy Action Theater - 400 msp (800)
Fruit Ninja Kinect - 560 msp (800)
Haunt - 400 msp (800)
Hole in the Wall - 400 msp (800)
Leedmees - 400 msp (800)
Rhythm Party - 400 msp (800)
Deals for all Xbox Live members
Castle Crashers - 600 msp (1200)
Fusion: Genesis - 400 msp (800)
Iron Brigade - 600 msp (1200)
--Rise of the Martian Bear - 200 msp (400)
Orcs Must Die! - 600 msp (1200)
Magic 2012 - 400 msp (800)
--Magic 2012 Expansion - 200 msp (400)
Trials HD - 600 msp (1200)
--Trials HD: Big Thrills - 200 msp (400)
Worms: Ultimate Mayhem - 600 msp (1200)
--Worms: UM Single-player pack - 200 msp (400)
Forza Motorsport 4
--Launch Bonus pack - 280 msp (560)
--November Speed pack - 280 msp (560)
--December IGN pack - 280 msp (560)
--January Jalopnik pack - 280 msp (560)
--February American Le Mans pack - 280 msp (560)
Gears of War 3
--Hoard Command Pack - 400 msp (800)
--RAAM's Shadow - 600 msp (1200)
-- Several skins are also discounted.
Gunstringer
--Real Big Shootin' - 120 msp (240)
Halo: Reach
--Anniversary map pack - 600 msp (1200)
--Defiant map pack - 400 msp (800)
--Noble map pack - 400 msp (800)
Kinect Sports Season 2
--Maple leaf golf pack - 200 msp (400)
--Midnight Mountain pack - 200 msp (400)