Gmail geekitude — In GMail with US English set, when you delete mail it goes to the “Trash” folder. Set it to UK English, and it’s “Deleted Items”.
TV geekitude — See how the ABC News titles look with no stories and no voiceover.
Google Video geekitude — Lots of snippets of info here, including the fact that Google’s video format is pretty much just a renamed DivX AVI.
Webmail geekitude — My web mail (Horde) puts a little flag against the country of the domain name of the sender. Of course it’s a little misleading when a message from someone using fastmail arrives, as it reckons it’s the Federated States of Micronesia…
Web design geekitude — The best freebie DHTML menus I’ve found so far are here. (Which I’ve implemented here and here. I reckon without too much trouble, WordPress’s categories could drive it automatically. Maybe something to put on the list for Geekrant 2.0.