It's time to head Uphill Both Ways again. In episode #56, "Act Naturally", Joseph and Mike recap the latest round of the Retro Pop-Culture Battle Royale (which brings the participants down to the 'Sweet 16'), Joe delivers on Mike's Mixtape Challenge, Mike tries to defend the movie "Xanadu", and finally they run down some singers who managed to successfully (but maybe not critically), transition into one or more acting gigs.