Richard Hammond's Crazy Contraptions

Teams build gizmos enabling Richard to straighten his duvet without leaving the bath.

Amateur pilots and a trio of stunt fans compete to build an automatic dog-feeder

In the first semi-final, two teams of brothers build jaw-dropping chain reaction machines to enable Richard to dust his ornaments without getting out of bed.

Its the grand finale as two teams battle to build the best party machine for Richards house and garden - all made out of everyday objects.