The characters dancing to Gangnam Style in the end credits. Heck, even Psy makes an appearance!
Precious' doggy antics and how Surly reacts to them.
Precious: Hey, boss. I'm gonna lick your face. [Surly looks at her, clearly disliking the idea] Come on! Don't be weird!
Fingers and Lucky's various discussions about, well, anything currently going on in the plot.
Lucky: (at Precious' barking) What's her problem?
Fingers: Probably complaining about the sub-standard working conditions around here!
When King is on the phone with Lana and Precious wants to go outside:
King: Potty break? Now?! (into the phone) No, honey, not you!
When Surly is caught by Andie with the dog whistle and attempts to pass the "thing-a-ma-boobie" off as a musical instrument, up to and including composing and (poorly) singing a song, "The No-Food Blues," which he sings into the whistle as if it's a microphone.
Surly and the cardinal fighting on the windshield of the villains' van, undeterred when Lucky turns on the wipers in an effort to get rid of them. Each time the wipers sweep back up, Surly and the evil bird take a swipe at one another, while Fingers and Lucky boredly watch them through the glass.
The young cop being given a donut as a reward for shooting out the gangsters' tire.
The beaver brothers repeatedly farting while digging through the hole. It climaxes when Surly accidently lets a dynamite stick explode and the beavers are flown out the hole.
Beaver brother#1 What'd you have for breakfast?!
Gangman Style playing when Surly and Buddy discover the nut store. They both dance to the song.
The random line that Raccoon says when he grabs the dog whistle.
