The humor in M*A*S*H* was of the wry, satirical type, rather than the "Big Laffs" lowbrow humor found today. While Mash was portrayed as a comedy, it was more of a drama/light humor type. There probably wasn't anything too amusing that stood out from the series.
As far as these "clip" shows go, I hate them also. The only reason they are on the air is that they can throw them together in no time and run it cheap. "Grab a couple kinescopes of 'I Love Lucy." Oh, and that bit from the Tonight Show where the axe thrower hits the target in the crotch, people love that!!!"
Lowbrow programming for the dog days of summer.