Olympic medallists Zac Purchase, Mark Hunter, Chris Bartley and GB Rowing's Adam Freeman-Pask were brought together for a one-off competition at the Henley Royal Regatta.
The 'Monsters University Rowing Team' was created to take on Oxford University, as part of the promotion of the new Disney Pixar prequel to Monsters Inc.
The Monster Team celebrated defeating the Oxford side, but Oxford University's Benjamin Walpole was magnanimous in defeat, saying "I don't think there's many student rowers out there who would mind admitting they lost to Team GB."
Olympic gold-medallist James Cracknell is encouraging people to help protect their local rivers.
The former rower will be promoting the "Love Your River" campaign on the River Chess in Buckinghamshire later.
Double Olympic champion James Cracknell has warned London's Olympians that they may struggle to adjust to ordinary life now the Games are over.
He told the Radio Times that there was a huge-comedown from being at the centre of global attention during the Olympics.
He said: "Now most of the Olympic guys and girls are back training, day after day, in the rain, with only one man and his dog watching,"
"A short time ago you were racing in front of 80,000 people - now there's nobody. And there will be nobody for four years."
Strangely, the fact that Britain won so many gold medals - 29 at the Olympics and 34 at the Paralympics - means that many champions will be forgotten.
"Could you name all 29 gold medal winners from London? I know I couldn't," he said.
"The reality is [some Olympic champions] will need to repeat that [success] in Rio...to have any chance of picking up a career outside sport when you finish."