The Tenuous Link

Mycroft Holmes is, or was (what is the correct tense for a fictional character?) Sherlock's older brother.

Mycroft is also the name of the search box in Firefox. You can press Control-K to move the cursor straight to it, and do a search for Mycroft to prove me right on both points.

When you've done that, visit mycroft.mozdev.org to see a huge list of extra search engines and resources that you can add to it. If you don't feel that you spend too much time at Wikipedia already, that is!