The seventh episode of American Gods Season 2,"Treasure of the Sun," is very much a 'crazy Sweeney episode' as Neil Gaiman incorporated a lot of the crazy Sweeney backstory that didn't originate it into the novel.
While crazy Sweeney himself takes front and middle in this episode, and "Treasure of the Sun" also features Shadow Moon and Sweeney working together ... whether they realize it or not. These two have come a long way since their bar fight in Season 1!
Source: blastr.com