Some couples' costumes make people extremely glad to be single (see the creepy childbirth costume and the distasteful Rihanna and Chris Brown one). This list, however, will make you excited about all of the possibilities for Halloween costumes this year. Whether you team up with your boyfriend/girlfriend or partner with a friend, these nerdy costumes are sure to impress.

1. Sheldon and Amy ("The Big Bang Theory")

2. The Doctor and the TARDIS ("Doctor Who")

3. Suzy and Sam ("Moonrise Kingdom")

4. Maeby and George Michael ("Arrested Development")

5. Ash and Pikachu ("Pokémon")

6. Jon Snow and Ygritte ("Game of Thrones")

7. C3PO and R2D2 ("Star Wars")

8. Fry and Leela ("Futurama")

9. Miguel and Tulio ("The Road to El Dorado")

10. Penny and Dr. Horrible ("Dr. Horrible's Sing-Along Blog")

11. Sonic and Tails (Sonic the Hedgehog)

12. Ms. Pac-Man and Inky (Pac-Man)

13. Michonne and a Walker ("The Walking Dead")

14. Juno and Paulie ("Juno")

15. Cosmo and Wanda ("The Fairly OddParents")

16. Wenda and Waldo ("Where's Waldo?")

17. Napoleon and Deb ("Napoleon Dynamite")

18. Scott and Ramona ("Scott Pilgrim vs. the World")

19. Dennis Nedry and the Dilophosaurus ("Jurassic Park")

20. Rick and Morty ("Rick and Morty")