Accesskeys are fun. These are keyboard shortcuts in HTML that you set up with an accesskey="x" attribute on an a href element or various kinds of form-input elements. Basically, accesskey="x" means you get to that thing via alt-x or option-x or whatever it is on your OS*browser. I know that I can do stuff in Firebird like type the first few letters of the link and that'll zip me right to it; but boy oh boy, accesskeys are even better!
So in the lexicon database web system I code for, I went thru the other day and put keyboard shortcuts all over the place -- so now there's a keyboard shortcut for the "Save this record and go to the next one" button and stuff. Here, I put some examples in the HTML of http://interglacial.com/ so you can actually try it out. Alt-e hits the Egads link, Alt-r hits the RTF link, and Alt-s hits the paragraph-symbol link; moreover, I've also put a TITLE attribute of "alt-s: Sean's home page" on that paragraph-symbol link, which makes a popup in modern(e) browsers. I've taken to having such explanatory TITLE attributes to indicate the ACCESSKEY attribute. Very handy.
Also, in my lexicon system, when you run a search and get a list of entries back, links 1 thru 9 get accesskey="1" thru accesskey="9".
So HTML accesskey are all in the category of stuff that beforehand didn't sound very interesting, but now that I've tried it, I MUST HAVE IT. You know, like silk boxers, or a giant orbiting death-ray.