A good way to spend 400 points

I think like a lot of people (perhaps?) I have bought Super Meat Boy and Costume Quest this month from Xbox Live. Super Meat Boy enjoyed a reduced price to 800 points at the same time when Xbox Live are promoting the offer of an 800 point rebate if you spend 2400 in the month of October. Whilst I think it's almost certain that they were asked to drop the price following rave reviews from awesome websites such as this one and stopping people reaching the 2400 on two better received games than any others released in the month, it also leaves me with a 400 point deficit to reach the offer threshold. 
 
Now I think I have most popular games for the console with the exception of sport (I'm European so it's just FIFA) and I need to come up with a way to spend 400 points so I can reach the offer limit. Unfortunately I already have Case 0. I don't wish this thread just to be about helping me out, I'm sure it would interest a lot of people out there. So, myself explained, I'd like you all to suggest some good Xbox Live anything(s) for...let's say...under 800 points. 
 
Get cracking crackers!

Chime  
 
/thread

I've already got Chime, any other ideas? 
 
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I'm actually in the exact same situation, and I'm really not sure what to spend the 400 on.  I'll have to browse the marketplace here in a bit and see what's available. 

do you have DooM? that's a pretty good 5$ purchase 

You could buy some indie games, there are some really fantastic ones on XBLA.

Hit up Game Room and buy 2 games for 480 pts.

Try Cloning Clyde. Awesome game. If not, there is Worms.

You could buy Deadspace Ignition... Nah, scratch that.
Not a lot of 400 point games out there I guess. If you have Trials HD you could buy the expansion pack.

When in doubt, buy Rock Band music.  You can throw in another 40 points and get a song pack, or you could just buy two 160-point songs and one 80-point one.

I believe Space Giraffe is 400 points, though that is a game that people tend to either like or completely despise.
It kinda depends on whether you're willing to spend $5 on a very Marmite-esque affair.

Weapon of Choice is a pretty awesome indie game, at least try out the demo.

Any of the old Sonic games!

Sonic & Knuckles is 240 points. I got some avatar items (I know, such a waste). Dead Rising 2 has some packs out for 160 a piece. Most of the classic Sega titles are 400; Gunstar Heroes, the Sonic Games, etc.

Ok, so I read the OP this time. Bioshock 2 DLC is on sale this week, do you have that? Shit man, the days of good things being 400 pts are gone.

Is Street Fighter II Hyper Fighting 400 points? I want to say it is. If you don't have it, get it. Even if the online is sparse and probably empty, it's still an arcade-perfect port of one of the best fighting games of all time for $5.

Thanks for all the suggestions! I have the dooms and sonics' on other platforms so i'm not to bothered by them. Arkedo Series 03 is pretty awesome, and I've been tempted by that one for nigh on 6 months now but I've reached a conclusion of two options: -   

Alan Wake DLC - The Writer    or     L4D2 DLC - The Sacrifice (both 560 points)
 
Decisions decisions!