Jonny Nelson, Yasmin Evans and Hacker T Dog return for another morning of Saturday Mash-Up! They're joined by stars from CBBC drama The Dumping Ground, and Jermaine Jenas is locked up for Stars Behind Bars. There's a brand new episode of The Next Step, and cartoon action from Danger Mouse and Ooglies. Two more celebrities vie to top the leaderboard in Push Off, and there's more Things in the Thing! Anything can happen on Saturday Mash-Up... except cooking! Show less