Alright, I've got it. I'll hand it to ucpete. There were multiple potential themes in this incredibly challenging MJM. I got clips two and four fairly quickly - they both reeked of Fall '97 and both came from jams I didn't know well. As a result, I checked shows with which I was less familiar and nabbed them (clip 2 - 11/16/97 Timber, overshadowed by the following night's show, and clip 4 - 11/14/97 Twist, overshadowed by...well, maybe I just missed this show in the pantheon of greats from Fall '97).

So now I'm going in multiple directions. Are the clips all from Fall '97? Clip 1 suggests maybe (although I smelled '99), but Clip 3, like Mike, says no. It's obvious the clip is from an earlier era. Do all the songs start with T? Maybe...

Then I notice 11/16/97 was played in Denver, CO and 11/14/97 in West Valley City, UT - two of the four states that make up the four corners. To prove if my theory has any merits, I go immediately to the '99 shows in the southwest and lo and behold, I come across the great Ghost of Las Cruces, NM (9-22-99).

Three for four! I'm confident I have the theme and start poking around early Arizona shows. For whatever reason, after searching unsuccessfully through a couple of shows, I start questioning myself. There's a potential alternate theme here and maybe the Four Corners thing is a ruse! Here's what I had:

Clip 1 - Ghost
Clip 2 - Timber
Clip 3 - ?
Clip 4 - Twist

Could the missing clip be a song that starts with "B" and the theme Good Times Bad Times? I mean, it's been quite a week, hasn't it?

But no, I stuck with the Four Corners hunch until the end and uncovered the third clip, the 12/9/94 Tweezer.

Ucpete, hell of a job. This was not easy.