Notorious wag Sylwester Wardega has a YouTube following for a good reason: he knows how to give his viewers a show. Here, he put together two almost believable dinosaur puppets and put them in position, then led Chris Pratt into their ambush. Pratt, as seen here, seemed pretty genuinely startled, but his anger quickly subsided into appreciation of the work Wardega and his associates put into their attack. It's that sportsmanlike response that really makes the clip shine: even in this offbeat improv setup, you can see the same Pratt personality that makes him a likable, bankable star.