Barack Obama will return to New York City's "The Late Show with Stephen Colbert" tonight as one of the last guest appearances before the show's end on May 21.

Stephen Colbert "didn't know what to do" with himself when he realised he was "wildly attracted" to a guest on the Late Show.

On Monday night, Colbert hosted fellow late-night hosts Fallon, Kimmel, Seth Meyers and John Oliver (aka the self-named Strike Force Five), who paid tribute to Colbert’s show, in a reunion that featur...