It’s no surprise that ‘Guardians of the Galaxy’ was the highest grossing film of the summer of 2014. But we bet there’s a lot of trivia about the film that you don’t know!

Our buddies at ScreenCrush compiled 15 facts about the movie that are pretty obscure and crazy-interesting. Wanna know a few? The ‘Guardians of the Galaxy’ soundtrack not only reached number one on the Billboard 200 Chart, but it also happens to be the first movie soundtrack album without a released single to hit number one. Even cooler? It was also released on audio cassette. Talk about old school.

Wanna find out how long it took director James Gunn to realize the super dreamy, super funny Chris Pratt was right for the role of Peter Quill? How about just how much weight Chris lost for the film? Now's your chance to find out!

You’ll also find out who Baby Groot’s dancing was modeled after, who the Milano was named after, and way, way more.

Think you know everything about ‘Guardians of the Galaxy’? Test your knowledge by checking out the 15 facts you might not know in the video above! Then watch more episodes of ‘You Think You Know Movies’ below.