Mine are:
Ryan breaking the neon light on Drew's desk with his head.
Wayne (singing, ala YMCA): Howard! H-O-R-W-A-R-D!
Wayne & the snake that got a little too close to his "anaconda" (I love his reaction)
Colin: (Scenes from a hat - Strange things for a doctor to say after 'Turn your head and cough') All right, now bend over and sneeze.
Colin: Every song a hit, every hit a smack!
Colin: It's me, Run-Away-From-Danger Man.
Greg: If you drink & drive, drive real fast. And don't forget to eat a mint, it fools the cops.
Colin playing a guy who can't tell whether people or man or woman, and has to "check" to find out.
Ryan: What do you think of when I say Ricky Ricardo and Cuban Cigars?
Colin: Oh… Tapioca!
Ryan: Really, why is that Colin?
Colin: Wasn't that one of his songs? TAPIOCA TAPIOCA! (Ryan begins cracking up)
And of course... CAPTAIN BLOODLOSS!