Both of those pages are the result of “googlebombing.” Here’s how it works: Google ranks search results according to relevant links. If you get a whole bunch of people from different websites to link to a page with a certain word or phrase, you can push that page to the top of the search results. “I’m feeling lucky” simply grabs the first search result.
Google discourages googlebombing, but they’ve yet to figure out what to do about it. The comment and trackback spam that plagues many blogs, by the way, is a form of googlebomb; the scoundrels are trying to raise their search-engine profiles. (The American Prospect was actually shut down by comment spam earlier this week.)