9. Hugh Jackman in 'X-Men: First Class' (2011)
In a nifty bit of continuity that links all X-Men movies and spinoffs to date, Wolverine (Hugh Jackman) appears for a brief moment in the prequel X-Men: First Class. Wolvie's only onscreen for a little more than 20 seconds or so, but he still manages to drop the F-bomb in that short time. We'd expect nothing less from our favorite gruff superhero.