Keke Palmer and the rest of the show's cast. It also featured new episodes of Nickelodeon's sitcoms iCarly ("iGet Pranky"), Victorious ("Beck's Big Break") and Big Time Rush ("Welcome Back Big Time"). This episode originally aired at the special time of 7:30 p.m. ET/PT, 6:30 p.m. CT/MT. 49 23 " Mad Rocks "