Check it out. The (rare) complete segment of The Monkees on The Glen Campbell Goodtime Hour from February 5, 1969 (I also linked to this clip in the 1969 North American Tour section), and Dolenz, Jones, Boyce and Hart on Don Kirshner's Rock Concert in 1976. I'm pretty sure DJBH also performed new material on that appearance but it's not up with these other clips (yet).
(There are some other shorter Goodtime Hour skits from '69 on YouTube that were previously made available on the Season 2 set of The Monkees television series.)
I posted a new photo in the 1996 North American Tour section (directly underneath the tour summary).
Head airs on Antenna TV today and at other times this week. Check your listings.