Today sees the release of DeathSpank: Thongs of Virtue on Steam, marking the availability of the whole heroic saga on the PC. Mac OSX users will be able to claim the same privilege on December 14th.
Remember, the Steam version of the game comes with the Snowy Mountain Dungeon that was sold as DLC on consoles in addition to "a new playable co-op character, Sidekick Tankko."
Source: Steam