It seems that Steam is again having a sale bonanza and included in the sale are two packages I really like.
One is the, 20+ game, complete Valve package that contains all Valve games ever released for only $50, the price of a normal copy of Portal 2 (which is included)!
The other is the complete Telltale pack that contains 16 games for $50.
Both great deals, and there are many others individual games and packages. So go check them out at Steam.