Worst Search Results

The recent New York Times article about Google search contained a note that Google is always on the lookout for bad search results. They acknowledged that constant minor tweaks occasionally produce results that are low quality.

We are all aware of the occasional site that ranks and appears to defy logic, but I am curious about queries where a majority of the results, or at least the top few, are particularly irrelevant. What “normal” queries do you run that gives really bad results?