I've seen some *amazing* replies on SO that must have easily taken the programmer an hour or more to craft. The great thing is that answers of that quality tend to get voted up highly, and lots of people seem to point links to that page, so Google ranks it quite highly.
For a long while, my top rated answer on SO was this joke.
I have written one or two answers of which I am quite proud and that took me an hour or two to craft, but my current top rated answer by a mile is a two line snippet of code demonstrating how to split a string in Objective-C.
What's hilarious to me is when I get to a SO question, and you have the inevitable jerk that tells the person asking the question to just "Google the answer". My inevitable thought is: how the hell do you think I got here, you self-righteous ass? I saw a great response from someone else as well, which was: "someone has to first answer the question before Google can link to an answer."
Soon after I started posting, somebody added some code to the site that refused to allow any answers with lmgtfy.com embedded as a link. I was outraged for about five seconds.