Ever spend the day at work waiting to get home to play the newest title out on Steam, only to have to spend the entire evening downloading the game? Well, this is no more, thanks to the most recent feature added to Steam. Now, you can log into your account remotely, buy a game, and install it to your PC, all from not-at-your-computer! You can do this either through the Steam Community website, or through Steam's iPhone or Android app. From there, you can view your games library; buy new games; and, if you have a Steam client running, install games remotely.
Read the announcement here.