I hate Wikipedia edit
Well, in fact, I don't hate Wikipedia, I spend many days doing nothing but hitting the random page link and discovering something about a baseball player (not kidding, roughly 80% of the time I dick around with the random page I get someone who once played professional baseball). But I get very glossy eyed when having to deal the "behind the scenes" bits, like talk pages or user pages. And sometimes trying to understand a page like the articles for deletion sends me into fits.
Also I fully support vandalism. Well not really, but occasionally scrowling down an article and finding some random nugget of non-information can be funny. I'm pretty sure if any one ever vandalised any of the articles I wrote I'd be pissed off, but I think it's important to have double standards these days.
The other major problem with Wikipedia is the in depth articles on scientific theories that I might be interested in (you know, something like string theory) only when trying to read feeling your brain fall out of your head as it was written by someone who obviously knows alot about the subject, and doesn't seem to care that anyone not familiar with the subject would find it about as useful as a child's drawing of a house.