Continuity mistake: When Bob and Handy are talking beside the Moose at the start of the film, they are talking about Handy's nose. Right after Handy says that when Bruce (The Moose) is there, his nose looks normal. As he says this, Bob looks down. Then as the camera changes angle to look at Bob for the reply, he is once again looking directly at Handy.
Continuity mistake: As we see Handy fixing the toilet in the President's house, he is holding a wrench in his right hand. Then after he bumps his head, he tries to get up and then grabs the wrench with his left hand. However, once the camera angle changes to show him getting up the wrench is back in his right hand.
Continuity mistake: As the camera pans over the Presidents home we see the president arriving in an escorted car. From the view above we can see a man mowing the lawn, moving from right to left across the camera. Yet, when the shot changes to a low level shot of the car pulling up the drive the man mowing the grass is nowhere in sight.
Continuity mistake: As the camera pans in from the sea to the Presidents house in Mooseport, we see a boat moored out to sea facing away from the house. Then moments later as we see the President exiting his car, the same boat is now facing to the side signifying a change of the tide.
Continuity mistake: During the scene at the end of the President's date with Sally when the two are talking on the porch, two cameras were used in the scene. The one that's on Sally is shot on a rainy night and the one on the President was shot on a clear night.
Continuity mistake: As Handy leaves the President's house at the start of the film we see Plunger his dog having sex with the Presidents dog. As he calls the dog over we see him pick the dog up by his front legs to talk to him. The buckle on the dogs collar changes position from the front to the side when the camera angle switches from facing the dogs face, to the shot from behind it.
Continuity mistake: When Handy is giving his proposal speech to Sally, the dirt on his cheeks change throughout without him touching it; from a line down his cheek that's not touching his ear, to a wide amount that's touching his ear.
Answer: His decision to retire wasn't related to this film; it just happened to be his last. He was working on other projects (mostly writing), and wanted to focus on those. He didn't "officially" announce his retirement from acting until 2008.