I knew I couldn't be the only quirky person in WoW. Talonhunter of EU-Tarren Mill's thread on the general forums helps me feel a little bit better. He asked what people's "ticks" are, citing "Every time I engage a mob, I strafe a few steps to either side," and "When I have done a brief dismount, to gather something or likewise, I always run a few steps before I get back on my mount again."
There are some things that seem odd, but actually appear to be common. Some examples include jumping when charging or when summoning a flying mount, obsession with repairing gear, and checking out what every linked item looks like. I have some of the habits mentioned in the thread, and a few others: