1. When Jim pretends to be William M. Buttlicker.

This ends in Dwight screaming "BUTTLICKER, OUR PRICES HAVE NEVER BEEN LOWER!" on the top of his lungs.

Season 5, "Customer Survey"

2. When Jim forms an "alliance" with Dwight.

Even though this prank backfires, Jim still convinces Dwight to bleach his hair blonde to spy on the Stamford branch, so I still consider it a success.

Season 1, "The Alliance"

3. When Jim sells Dwight magic legumes.

Jim convinces Dwight to trade him a $150 telescope for a packet of "Professor Copperfield's Miracle Legumes."

Season 7, "Garage Sale"

4. When Jim successfully conditioned Dwight with Altoid mints.

Proving that paying attention in science class just might be useful down the road.

Season 3, "Phyllis' Wedding"

5. When Jim convinced Dwight it was Friday, even though it was only Thursday.

Causing Dwight to be late to work for the first time, right after he bragged about never being tardy.

Season 2, "Performance Review"

6. When Jim convinces Dwight that the only worthy opponent to fight him is himself.

Causing Dwight to beat himself up.

Season 6, "Murder"

7. When Jim causes Dwight to hit himself in the head with his phone.

Simple, yet effective.

Season 2, "Conflict Resolution"

8. When Jim made Dwight think he had turned into a vampire.

Jim tells Dwight he had a bad reaction to garlic bread, that his teeth hurt, and that Angela's crucifix was too blinding.

Season 3, "Business School"

9. When Jim replaces Dwights regular suit with one made of tear away velcro.

Revealing Dwight's pea green underwear.

Season 8, "Free Family Portrait Studio"

10. When Jim got Dwight to follow a 500ft red wire up a telephone pole.

Jim got the whole spool of wire at a flea market for only $20!

Season 5, "Prince Family Paper"

11. When Jim keeps track of all of Dwight's company-wasting personal time.

This includes time taken to yawn.

Season 5, "Business Ethics"

12. When Jim faxed Dwight pretending to be future Dwight.

Jim couldn't stay away from the pranks even when he transferred to another branch.

Season 3, "Branch Closing"

13. And when Jim found Dwight's wallet in the parking lot and returned it to him without messing with it.

Dwight didn't believe Jim, so he cancelled all his credit cards.

Season 2, "Office Olympics"