At the end when Maurice and Ed are putting the population sign back up, Ed turns the ratchet the wrong way!
The buck Ed shoots is the same one (same footage) Chris can't shoot in Season 5 Episode 19 - The Gift of the Maggie.
The film Ed Chigliak and Heather Haynes are watching when Maurice and Lester walk in on them is Alfred Hichcock's 1959 thriller North by Northwest (1959) starring Cary Grant.
When Maggie is bowling with Bob toward the end of the episode, she tells him, "Watch this strike." She then proceeds to convert a spare.
Joel tells Maggie he needs a lift to the Aluetian Islands, specifically Bogoslof Island, in his search for the "Jeweled City of the North". Maggie responds, "there's nothing there". The real Bogoslof Island is a tiny 1 mile x 1/3 mile speck of land 30+ miles north of Umnak and Unalaska Islands (of the Fox Islands group). It is a designated wildlife sanctuary and is completely uninhabited.
When Dr. Phil takes the coffee cup from Joel, the cup in Joel's hand changes from red to blue.