The characters of Terry (William H. Macy) and Kit (Felicity Huffman) are married in real life.
Around 60 minutes into the film, William H. Macy's character needles his girlfriend with fish. This scene seems to be a reference to the famous lobster scene in Woody Allen's "Annie Hall."
Felicity Huffman and Julia Campbell both appeared in "Desperate Housewives," albeit Huffman in a lead role and Campbell as a guest star.
The film that Terry and Kit are watching is The Thin Man.