Y'all know my stance on the whole MLIs-librarian versus non-MLIS-librarian thing. But Mary Carmen really hit it with her post "You Call it Being a Professional; Some of Us Call it Being an A$$hat". She links to several other blogger's posts as well, and I certainly can't say it any better.
My mother forgot more in her 37 years as a non-degreed librarian (and yes, I believe she is now a retired librarian, not a retired paraprofessional library worker, dammit) than I will ever know. She, and librarians like her, taught me a lot about how you should treat fellow workers. I hope I live up to her lessons.