Steam’s big Summer Camp Sale starts today! Not that you can buy anything right now, since the store is buckling under the weight of the traffic. Reddit user Remmib has put together a nice little listing of most of the deals here, but you might want to wait an hour or two before trying to get in there.
Some standouts: Valve Complete Pack (Portal 2 included) for $50, Borderlands for $5, a great id pack for $30, and the Rockstar Collection for $40. Ah, Summer!