I take the train to school and work in the mornings.
Once a woman started reciting a full church mass in my car and nobody told her to shut up. She then proceeded to hand out those little Bible book things, and use her briefcase to kneel on as if she was praying in a pew. This lasted for about 45 minutes, which I assume was enough to get through it. She also sang the parts of the mass too, and was very bad at it, and nobody joined her.
I also saw a homeless man (or really poor) try to cut his beard off with some plastic scissors.
There was a man who tried to sell his burned collection of porn DVDs in a catalog he made and carried with himself in a binder. He would take orders and mail the discs later or agree to meet you outside a stop for an exchange, or you could buy instantly on the train without a DVD sleeve.
Also a chick showed me her breasts once because I asked about her tattoos once, and she had them on her breasts, which she showed to me because I was interested in her ink. The tattoos were actually pretty cool, as was she.
Also, always let women who you want to talk to have your seat (also you'll be a gentleman). Strike up conversation, it's kind of fun.