Also, while not specifically about Nesmith, since HEAD is linked here I’ll just add that 46 minutes into the film (co-written by Jack Nicholson) is Davy Jones singing the Nilsson-penned “Daddy’s Song” while dancing with Toni Basil (who probably choreographed the routine) all shot in a way that deserves a photosensitive seizure warning.
The 60s, man.