Fat Halpert
littlekidlover
mr. poop

Money_Beets

K_I_S_S
Dwighke or however u spell that

^Dwigt

Pama-lama-ding-dong (it's kind of long, though)
Worlds_Best_Boss

Dwide_Schrute

Hotel_Hell
Ho_No_Mo
Flonkerton

It turns out "money_beets" already is a user...

Assistant_to_the_Regional_Manager
Cousin_Mose
DunderMifflinfinity
Bobblehead_Joe

Pepperspray
BigTuna
Mixed-Berry-Yogurt

Agent-Michael-Scarn
GoldenFace
Samuel-L-Chang

Mistah_Rogers
SeaMonster
Im_The_Safety_Officer_Not_You
King_Of_Forwards
Scrantonicity_TWO

GoodLuckWithYourBand

Spamster

DunMiff/sys
DwightKShrute (Jim/Pam/Computer and Dwight's IM names in "Launch Party")
PamPong

WorldsBestBoss
Demarcation
ShunUnshunReshun
Stolen_PostIt_Notes
Pam6.0

Full_Desagulation

Is that how you'd spell it?

Littlestitious
StalkInn
Mr.AKnife
OverkillKiller

200dollarplasma
ParnoldSchmarzeneggar

kerro21
no
its desalutation :)

Hmmmmm... I always thought it was disadjulation.

OfficeQuotes says it's disadulation. ;)

Fudgey_the_Whale

The_Hunter

also, disadulation is not a real word, Jim made it up.

Ben-Franklin-Stripper
Gaycation
Type-2-Cough

Hotdog_Fingers
Man_Meat
Firewalker

Pennyless_Loafers
ChairModel
AWeekAfterWeStartedDating

I originally came up with this one for the Morph the Fanpopper competition, but decided it was too long, so I'm putting it here instead... If I had found a user with "mouth" in their name, I would've added it there. =P
SchruteBeets + spooninmytea + mountainbuckeye + theraconteur = SchruteBeetsinmyMouth

Shrunken_Chesticles
Gaydar