(S07E12) It's time to head back to the ballroom, and week 6 brought with it another change to the format. In addition to one regular performance from each couple, they all got together for a big group number as well. Shotyme stopped by to choreograph what was billed as the "Old School Hip Hop" performance. As you might expect, that went better for some than it did for others. We also had a special guest judge this week. Michael Flatley, best known for Lord of the Dance, filled in for Len Goodman. He got the full DWTS experience, witnessing some fantastic performances... and Cloris. A look at all of the performances, is after the jump.