The Monkees performed two concerts at Pine Knob on their '87 summer tour. Here's a review of the first show on August 26, which also featured "Weird Al" Yankovic who opened for The Monkees that year.
The video below features footage from the second night at Pine Knob on August 27, 1987:
In Memoriam: Michael Nesmith
Dolenz sings Nesmith - The EP