I'm afraid that I'm one of those whose mind tends to go into overdrive at the wrong times - like whenever I am faced with a late night dilemna. For some reason, I want to rehearse exactly how any confrontation and/or solution will proceed prior to the actual event. I know it's counterproductive to a good night's sleep, but that doesn't make me any less susceptible to it.
In re Marx Brother films, I'm with MM'57. The word play and twisting of the English (meaning "American") language is the foundation for their humor. Some of the sight gags work well - like the mirror routine between Groucho and Harpo, but overall, I don't get into slapstick.
As far as comedy goes, I rarely find anything that makes me laugh out loud. The most I remember laughing at a movie was the first time I saw
Young Frankenstein. There were times when I was the only one laughing in the theater.
The most full and unrestrained laughter I ever experienced was listening to George Carlin's
On The Road album with my friend. He wanted to borrow it to let his parents hear it, but was afraid that it would be detrimental to their physical health.
Chaplin's comedy worked well in the silents, but
The Great Dictator left me wondering where's the humor. I guess the great thing about comedy is that there are several ways to be humorous, so if you don't like one style of comedy, just wait - another is just around the corner.
All you can do is the best you can do.... 
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