maksim chmerkovskiy return dancing with the stars 'Dancing With the Stars': Maksim Chmerkovskiy back for plugged/unplugged semifinalsHunky professional dancer Maksim Chmerkovskiy left “Dancing With the Stars” earlier this year to pursue other projects, but Monday, Nov. 18 he’ll be back in the ballroom — as a guest judge.

ABC has announced that Maks will sit with Carrie Ann, Lee and Bruno at the judges’ table for the first ever plugged/unplugged night for the Season 17 semifinals. What that means is that the couples must perform two versions of the same song — one plugged, one unplugged.

The first round will feature either a jazz, paso doble, cha cha or tango routine to the plugged version of the song, then the second round will feature either a Viennese waltz, Argentine tango or rumba routine to the unplugged version of the song.

There are five couples left for the semifinals — celebrities Corbin Bleu, Bill Engvall, Jack Osbourne, Leah Remini and Amber Riley. Who do you think will take home the mirror ball trophy?