Cora Little sitting on the bench where she sees Monk inside the diner was filmed only 250 feet (75 meters) from a scene in the "Kick The Can" segment of Twilight Zone: The Movie (1983). This episode was filmed in the same town as Mr. Monk and the UFO (2009)(#8.3)
Cora says a paint can fell on his head and he about fell overboard. This episode is basically the movie Overboard.
The character name Roger Zisk (played by Jim Parrack) is no doubt a nod to the show's executive producer Randy Zisk.
The "Bee Farm" is actually called an apiary. An apiary is a location where beehives of honey bees are kept.