I agree with kajero about the putting on hold to answer another call...whose brain fart was it to invent call waiting anyway? It is also a distraction to have the beeping when somebody else calls and you're already in a conversation. As for an "original" pet peeve of mine, it bugs me when I am checking out at the store and the person behind me moves up so he/she is super close. It's like they're worried about losing their spot in line or something, and I hate being crowded like that. I always feel like turning around and telling the person to back up, but the one time I said something the person got all huffy and acted like I was the one doing something wrong (to be fair, I was probably a little snarky in how I said it).