commenting
I agree with the last one, but what's worse is wankers who comment their code, religiously, and use that as an excuse to write abysmal code.

My boss (for example) evidently hasn't heard of the novel concepts of "functions" or "subroutines". and pretty much writes everything inline in main() (or whereever the extra code needs to go). Instead of creating a function called "foo", he will place a comment "/*foo*/" at the top of a massive chunk of code. Don't get me started on the fact that we never use C, so stupid little single-line comments like that should be "//".
(Rastus P Watermelon, Fri 2 May 2008, 21:11, Reply)