Season four of every geek’s favourite show – The Big Bang Theory – is starting in the US this month (23rd September on CBS.) So we decided we would look back at the previous seasons and find some classic Sheldon Cooper quotes that would make any geek proud:

Sheldon: Scissors cuts paper, paper covers rock, rock crushes lizard, lizard poisons Spock, Spock smashes scissors, scissors decapitates lizard, lizard eats paper, paper disproves Spock, Spock vaporizes rock, and as it always has, rock crushes scissors.

Sheldon: Ah, gravity – thou art a heartless bitch.

Sheldon: Oh, Ubuntu. You’re my favorite Linux-based operating system.

Sheldon: Well, well, well, if it isn’t Wil Wheaton. The Green Goblin to my Spider-Man, the Pope Paul V to my Galileo, the Internet Explorer to my Firefox!

Sheldon: My new computer came with Windows 7. Windows 7 is much more user-friendly than Windows Vista……I don’t like that.

If you need a bit of a refresher before season 4 hits your screens then head over to TV.com for a video recap of season 3.