Dom Joly reveals the gadgets in his country home and John Cleese meets Eric Scott, who crosses the Thames using a jet pack. Plus Katy Brand, Ed Byrne, Hugh Dennis and John Thompson play Guess the Gadget.

Gadget madness as John Cleese investigates invisibility cloaks and Sue Perkins reveals the gizmos in her home. Plus Tony Hawks, Hugh Dennis and Goldie with their top gadgets.

John Cleese and a raft of other celebs road-test some of the world's weirdest gadgets. Plus, Danny Wallace reveals the gizmos to be found in his home.

Celebrities including John Cleese try out a range of weird and wonderful gadgets. Plus, discover the favourite gizmos of guest Alex Zane.

Check out more crazy gadgets and gizmos with John Cleese and other celebrity guests. Here, Mark Durden Smith reveals the gadgets to be found in his own home.

John Cleese and other celebs try out some of the world's weirdest gadgets in a series exclusive to Dave. Guest Jason Manford shows viewers the gadgets in his own home.