In season 1: episode 3 South Bound Suarez, one of the guest stars was Lana Parrilla, who would go on to play the "Evil Queen" in ABC'S Once Upon a Time. In this Episode: Season 2: Episode 7 Half a World Away one of the guest stars is Rebecca Mader who would go on to play Zelena the "Wicked Witch" half-sister to the "Evil Queen." * Incidentally, Eion Bailey, "Ben Mercer" played "Pinocchio" in Once Upon a Time.
Episode guest star Rebecca Mader went on to play Zelena/the Wicked Witch on Once Upon a Time; Christopher Gorham (Auggie) played the Wizard of Oz.
Along with Sendhil Ramamurthy (Jai Wilcox) and Anne Dudek (Danielle), episode guest star Patrick Sabongui went on to play a recurring character on The Flash.
This episode is named after a song by R.E.M.