Not one of the scenes, sadly, though a lot of them are perfect. Having said that, I've used some MST3K songs in places where, either for acting or for real life situations, I needed a song. Clown In The Sky and Let Me Be Frank About Frank are probably the best examples of that kind of thing, but it's weird and a little unsettling how often the Hobgoblins song comes up for me.
If I was going to pick one for a monologue or an audition, I'd pick... well, it'd depend a lot on what it was for, but Servo's recital of A Child's Christmas In Space is actually a really nice monologue that features a strong range of emotions and requires more than a little in the way of acting chops to pull off. And if you can get some help pulling it off, the Murder Mystery Dinner Party is amazingly memorable.
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