Matt Damon's carved out a career as an A-list actor over the years, whether it's playing the titular super spy in the Jason Bourne franchise or starring in projects with his longtime friend Ben Affleck. There's another element of Damon's career that's flown under the radar, but needs to be discussed, and that's the fact that he tends to make cameos when you least expect it. What makes these cameos so great is that they cover a wide variety of films and genres; one minute, he could be playing a highly exaggerated version of himself in Jay and Silent Bob Strike Backor a punk rocker who makes an entire song about sleeping with another guy's girlfriend in EuroTrip. If you take a closer look at these cameos, there's a major element that links them all together.