one of the few subs I actually remember was a science-substitute (his specialty was biology), and he'd bring his snakes to class and let them wander about the class room and chill with the kids.

He actually cared about the kids he was teaching.

then there was the white South African sub that spent the entire class bitching about "discrimination" because she was denied scholarships for (black) South Africans affected by apartheid. she was just bitchy. (and credit to our history teachers, they found out about it and gave us an impromptu weeklong lesson on Apartheid.)