Jimmy Fallon, Seth Meyers, Jon Stewart and John Oliver all made cameo appearances during Monday's "The Late Show with Stephen Colbert."

John Oliver, Jon Stewart, Jimmy Fallon, Seth Meyers and more had cameos during the July 21 episode of "The Late Show With Stephen Colbert."

The gag started with Miranda and Weird Al coming out to perform a song – a Coldplay song, in fact, a reference to the Astronomer scandal, which saw the CEO resigning after getting caught with the company’s HR chief on a kiss-cam at a recent concert from Chris Martin’s band.