Katie Thistleton

It's 30 years since CBBC started airing short links between shows. To celebrate, Hacker has brought together the finest presenters, past, present and even a new one, to reminisce and laugh at a few bloopers.

Alexander Armstrong and Richard Osman present a celebrity version of the general knowledge quiz in which contestants try to come up with the answers that nobody else could think of.

Celebrities discuss their own personal experiences before surprising two of their teenage fans and passing on their knowledge about the difficult subjects.

Celebrity Mastermind is a British television quiz show broadcast by BBC television. The show is a spin-off of the long-running quiz show Mastermind, with the exception that all the contestants are celebrities. As with the main show, John Humphrys is the host and question-master. Magnus Magnusson was quizmaster on the 2003/04 episodes featuring Jonathan Meades as winner.

Ross Kemp hosts a nail-biting quiz. Using knowledge, strategy and a little luck, contestants must cross the bridge, spotting the lies. One wrong step and they lose everything.