Just a quick heads up for you before the weekend. Steam's annual Summer Sale is live (as of yesterday). There's loads of cracking deals to be had, for example, at the moment Portal 2 is available for ú3.49.
On top of the usual individual discounts there are also the Publisher's Bundles. These are complete, or near complete collections of games, and represent incredible value for money. Well worth checking out.
Head here to see if there's anything that tickles your fancy.