Marshal Nalhober says, "Great Googly Moogly" which is a reference to Project Pat's song "Good Googly Moogly"; which, in turn, is a reference to the "Sanford and Son" character Grady Wilson's one-liner "Good Goobly Goo".
William H. Macy's character has a discussion on the phone where he complains he cannot read a smudgy fax, and the message should be mailed, not faxed. This is exactly like a conversation his character has in Fargo.