RANKED: The best Marvel superhero movies of the past 8 years

Ever since "Iron Man" was released in 2008 and kicked off the Marvel Cinematic Universe, Marvel has taken over the box office.

In the past eight years, Marvel Studios has put out well over 20 movies that span multiple studios - from Disney to 20th Century Fox.

"Deadpool," which came out on February 12, shattered box-office records, and "Captain America: Civil War" looks to do the same in May.

In anticipation of the upcoming "Captain America" and "X-Men: Apocalypse," we ranked the 12 best Marvel movies we've seen since Robert Downey Jr.'s era-defining "Iron Man."