It's been years since clippy has made his presence known on my computer, but I've run into him several times on ther computers. The most annoying thing that clippy does is tap on the screen. My initial reaction is to get very angry at it because it's going to scratch the inside of the monitor. After I realize that it's just an annoying graphic and it can't possibly damage the hardware, I settle down a bit, but now I'm thououghly annoyed because now I've been completely distracted.
You know what else is really annoying? The HP help guy (ya know, the guy that looks like Einstein). I really hate that one.