The one that has really been bugging me lately is when people say "<insert title of hobby/career/volunteer work> is my passion." If I were president I'd order a god damned Predator drone strike on anyone who uttered that phrase.
Oh yes! I find the word "passion" to be greatly overused in general. Every job I apply for wants me to be "passionate" - about the career path or about something. At courses, inductions or even in casual conversation I get asked what I'm "passionate" about. I was always of the impression that passion is a rare thing - that if you're truly passionate about something, then that shows an extraordinary commitment or enjoyment; you're a very rare and lucky person if passion truly takes hold. But it seems passion is now something that everyone is expected to have, like it's the latest fad.