Steam Wallet

candy

A timeshare.

If it was right now, during the summer sale: I would buy Garry's Mod! :P

The self-respect of not spending it merely because I have it?

Battlefield 2 or Riddick Assault on Dark Athena =]

Battlefield 2 or Riddick Assault on Dark Athena =]

GTA

An Assassins Creed game

Sonic Adventures 2, and I would raise the best chao....

I would save it

Probably Ys: origins or Fortune Summoners.

Orcs Must Die! Franchise Pack :p

counter strike normal

Get Dawnguard for my friend.

you're talking crazy talk, I've got 12.84 left and some of that is likely to go to a copy of Don't Starve at some point in the near future

whatever you want that can be gotten with $10 Steam Wallet

Mark of the Ninja while its on Sale.

10 fortix's

4 naughty keys XD

Pop quiz, hotshot. There's a bomb on a bus. Once the bus goes 50 miles an hour, the bomb is armed. If it drops below 50, it blows up. What do you do? What do you do?

Dungeon Defenders or Orcs Must Die! Franchise pack

World in Conflict

Mark of the Ninja. I would earn another $2.5 and then I would get KOTOR II as well.

You could get vanilla Civ 5, and if you liked it you could get Gods and Kings from GMG for $3.15 (about 90% off!) if you act fast.

Dungeons of Dredmor: Conquest of the Wizardlands - $0.74
Fable - the Lost Chapters - $2.50
Star Wars: Knights of the Old Republic II - $2.50
Wanderlust: Rebirth - $3.49

Grand Total = $9.23

That's assuming that Fable and Knights of the Old Republic II go for 75% off again.
I'd swap out Fable for Puzzle Agent 2 if it got a bigger discount though.