Plot: Griff Rhys Jones, Dara O'Briain, Rory McGrath and a nervous dog called Loli set out from Kingston in a wooden skiff in an attempt to re-trace the journey up the Thames immortalised by Jerome K Jerome in his comedy classic Three Men in a Boat. Along the way they drop in unannounced on a couple of friends - Pink Floyd's David Gilmour and Antony Worrall Thomson