PotterCon, and 21 other magical things to do this weekend

Don't worry, you're not too old. — Don’t worry, you’re not too old.

1. Head to Industry City for R100, a Japanese film about a guy who joins an underground S&M club and discovers things can get weird when you do that. (Friday)

2. Salute one of humanity’s greatest inventions (or was it a discovery?) with a four-course cheese-centric meal at this Speakcheesey. (Friday)

3. See garage rockers Galapagos Now! and the Dreadful Crows at Glasslands. (Friday)

4. Dance to some old school hip hop at Footwerq. (Friday)

5. Videology’s got just the dance scenes from all the Step Up movies, which is pretty much what you want when you go to see a Step Up movie anyway, right? (Friday)

6. Even if your owl hasn’t brought your Hogwarts acceptance letter yet, head to PotterCon at the Bell House and shamelessly indulge in Harry Potter-themed day drinking. (Saturday)

7. See Rebel Racket and Hammel on Trial, singers of “I Hate Your Kid & Values,” at The Rock Shop. (Saturday)

8. Spend an offbeat night with Downbeat Keys, Cloak, and Mr. Tough at Glasslands. (Saturday)

9. Get your folk music fix with Max & Gillian at Tea Lounge. (Saturday)

10. Show off your Rock Band guitar riff skills AND help sick kids at The Brick’s Rock Band Karaoke Night. (Saturday)

11. Whine away to Kes the Band’s soca at Celebrate Brooklyn. (Saturday)

12. Punkish popish Midnight Mob takes on The Grand Victory. (Saturday)

13. Join the Lovers League for their EP release at Pete’s Candy Store. (Saturday)

14. Brooklyn Bowl’s Dick Dale after-party is just five bucks, and will have surf rock 45s all night, a limbo contest and go-go dancing. What else do you need on a Saturday night? (Saturday)

15. BookCourt launches Dear Daughter, a South Dakota murder mystery. (Sunday)

16. Sunset Park is in the news, which is as good a reason as any to hit up dance party Mister Sunday at Industry City. (Sunday)

17. Just in case you didn’t dance enough this weekend, head to Cumbe for an important lesson in Dancehall. (Sunday)

18. Babeland wants to help you with a free workshop about your positioning. Your sex positioning. (Sunday)

19. Celebrate all foods round at the Vegan Cook-Off: Best Balls Competition. (Sunday)

20. The Saint Catherine is starting Twin Peaks from the very beginning, so if you’ve been meaning to watch it, or you just want to relive every second of it, well, here’s your chance. (Sunday)

21. Relive your little league days at this showing of The Sandlot at Canal Bar. (Sunday)

22. Nitehawk Cinema’s outdoor movie series at 50 Kent ends with Three Amigos, complete with a live mariachi band.