I do have one beef with code doc/comments... when the author's stated intention doesn't actually match what the code does.
Is the comment out of date? Is the code flawed? Which do you start with?
Having said that, though, I find that *way* more often than not, having a why-this-function-exists comment helps more than it hurts.

Update: Darn it, I thought I was being all clever and stuff... turns out there's a whole thread dedicated to this topic. :-)