After cleaning off the patio furniture at Shaun's house, he enters the party and passes by several instruments, two being in the previous Movie-theme jam at Gus' place. The Fender Precision Bass (played by Gus in both scenes) and the Gibson Acoustic (played by Cori).
Two Mad Men regulars are involved in this episode. John Slattery (Roger Sterling) directs and Rich Sommer (Harry Crane) features as Dustin.