In no particular order;
Slow walking people at the supermarket or train station (dont make me punch you in the back of the head)
Indirect people (get to the point already)
People who can't make eye contact when talking to you (if they're insecure, fair enough)
People who project shit for an excuse to talk about themselves ("hows your day?" Ears shut, blah blah blah)
People who look at you sideways (turn your head if you wanna look at me, prick)
Hm, will think of more...
Edit
The overuse of the word "tremendous" by soccer commentators
Limp wrist handshakes
Southerners who make every sentance sound like a confused ozzie asking a question
When in a shop, being asked "Can I help you?" (Look, if I want your help, I'll fucking ask, right?)
Paki's who think they're black (one of the reasons why I loved Ali G, was because he would take the piss out of it)
*thesugargirl because he she is a paki