I'm twenty-something, and those are my comedy 'bases'.
Perhaps it has something to do with the types of humor?
Monty Python, for example, tends to create comedy from the over-exaggeration of pure logic. I think we, as programmers, tend to do that anyway; to see it portrayed on the silver screen is great, and maybe we also get a sense of relief from realizing that we aren't the only ones coming up with such silliness, albeit mentally.
Same sort of traits abound in Dr.Demento and MAD. 'Wet Dream' and most of the 'Lighter side of...' series are similar. Take a logical premise, and take it to the point of silliness.
RIP. I have fond memories of MAD, and it definitely helped created the person I am today.
Every time I see one of these videos I have two thoughts. One, insane never could do. Two, that's what flying in my dreams looks like, I can completely see why they do what they do.