Whose Line is It Anyway? stars Brad Sherwood and Colin Mochrie — appearing Saturday night at the Power Center as part of the Ann Arbor Summer Festival — have been doing improv comedy together since they met in the early ’90s, so they have a long-established, familiar rapport with each other.

“There’s almost a sibling rivalry that happens backstage and on stage, and that becomes part of the show, watching us try to outdo each other,” said Mochrie.

Sherwood, meanwhile, confessed that he’s always looking for the chance to make his improv partner laugh on-stage. “It’s hard, because (Mochrie’s) the most stoic of all of us,” said Sherwood. “He’s granite. … If I actually say something that makes him laugh, I’ll hear, under his breath, an involuntary spasm for half a second. But that’s about it.” READ THE REST HERE