7. Dwight's Revenge on Jim
One of the biggest rivalries on television: Jim & Dwight. I would go as far as to say if you take past enemies who have harmed the other or killed them, (Batman & Bane, Anton Chigurh & Llewelyn Moss, Mario & Bowser, you get it) Jim & Dwight may be the greatest rivalry of all time.
There are pranks galore between them. This last season Jim was worried and prepared for Dwight's retaliation against his last prank on him: finding out where Dwight gets his suits dry-cleaned, made a velcro tear away version and well, tearing away. That's a personal top 10 Jim & Dwight prank fave for me. Dwight set up a family portrait studio to get pictures taken for all the office employees; but secretly to get DNA off of baby Phillip and see if he is indeed the father. So Dwight was a tad preoccupied at the moment to be hatching revenge on Jim. But I do believe something big is coming back for him. Even bigger then the epic snowball fight of 2010.