Saturday Mash-Up Live!: Season 1, Episode 12

1 - 12: Episode 12

Yasmin, Jonny and Hacker welcome a host of stars into the studio for their live Christmas party. Plus we crown one celebrity the Push Off Champion for 2017! Plus some of CBBC's biggest shows - Danger Mouse, Dennis and Gnasher Unleashed and brand new Odd Squad. And there's more Things in the Thing and a look at some of the best bits from the series.