Each Challenge pits numerous cast members from past seasons of reality shows against each other, dividing them into two separate teams according to different criteria, such as gender, which show they first appeared on, whether or not they're veterans or rookies on the show, etc. The two teams compete in numerous missions in order to win prizes and advance in the overall game.

So Little Time is an American sitcom starring Mary-Kate and Ashley Olsen that aired on Fox Family. The first half of the series aired from June 2, 2001, to August 15, 2001. The series then went on a four-month hiatus owing to network management changes. By December 2001, Fox Family had become ABC Family, and the remaining episodes aired until May 4, 2002.

Two of a Kind is an American sitcom that aired on ABC as part of the network's TGIF line-up, starring Mary-Kate and Ashley Olsen. The show aired from September 25, 1998 to July 9, 1999.

The series was produced by Griffard/Adler Productions, Dualstar Productions, and Miller-Boyett-Warren Productions, in association with Warner Bros. Television. It was the last series to be produced by Miller-Boyett Productions in any of its identities.

Mary-Kate and Ashley in Action! is an animated television series by DIC Entertainment, Dualstar, Buena Vista Television and Club Acclaim, featuring the voices and likeness of Mary-Kate and Ashley Olsen. It is also a series of books that spun off, from the show. The show premiered on October 20, 2001 on The Walt Disney Company's One Saturday Morning on The American Broadcasting Company and was cancelled after one season due to poor ratings. Reruns were later shown on Toon Disney.