Great topic, Big Jeff.
One of my all-time favorites is: Nip it in the bud!
Another is Malcolm Meriwether's, Aren't you kind?
Also, Andy's (usually to Barney): You beat all, you know that?
Compelshin and singing acapella are two of my favorites.
We use the phrase "sure, Mike, sure". Barney used it in the episode where he drank the spiked spring water from the crock before meeting the governor. We also will say "2 & 2 make 4" and like Melissa we use the word "compelshun" quite often as well as inarculated. Oh, and "it's definitely no fun when those iron doors clang shut."
'Beat to the socks', by Andy is one that I had to look up the meaning, Big Jeff.
Seems it's listed under 'Black-American' slang, and was a segment of a lyric from a Fats Waller song. Also, it has been attributed to Kerouac, as related to the 'Beat Generation.'
"whiff and a whisker"
(Barney says this to Andy when he's going on about Asa's lack of gun screws and is reffering to just how close the hardware store is in proximity to where Asa is and works.)
"Come on in the house!," when answering the door.
There's Aunt Bee to Opie, regarding the milk he wasn't drinking:
"We can't put it back in the cow!"
and Barney's comment about all the pains he went to getting ready for his date (which was broken),
"Heartaches! Nothin' but heartaches!"
And this coming from a guy who took Juanita to Morelli's (where everybody goes, according to Andy)!