I love my nerdy boys! 
Get ready for an 18 hour long marathon with The Hobbit movies, plus 10+ Star Wars movies, Fordsy. I’m sure he did go see Empire Strikes Back (1980) with Fiddleford or something, but I wouldn’t put it past him to be so focused on his research in Gravity Falls, he missed it. Boy, is he in for the most famous twist in movie history.