my 3rd grade teacher and geometry teacher were star wars fanatics. I used to talk about comics with my 3rd grade teacher. he was pretty cool.
the biology teachers I had were strange. my 7th grade biology teacher worked with horses on a ranch and she used to do jobs like artificial insemination.
my freshman biology teacher used to have various types of spiders and body parts in jars of formaldehyde. He also brought his pet scorpion spider to class one day.
My art professor used to be a freelance artist and did box art for oldschool DOS videogames, prototypes of those dinosaurs from jurassic park, and knew the guy who did the boxart for Doom. he also collected electic guitars, was in a band and attended many ozzfests.
my composition professor was obsessed with greek mythology and would try to incorporate it into his lectures. he also talked about stuff like programming gigs, alcoholic beverages, and how he was the oldest guy in a brighteyes concert.