This wordpress easter egg is pretty much the coolest easter egg I’ve seen yet. Works on the latest 2.7 version too, just verified. And yes, I’ve been in the software industry for a long enough time to be a good judge of coolness – most easter eggs are just a glorified way for the team to roll credits – this one reaches out to the ubercool detector in the geek in me pretty effectively. 
Anyone remember the Windows 3.1 easter egg where you could Ctrl + Shift + Alt + click on the image in the Help -> About dialog of progman to see the windows mascot bear? That’s pretty much the earliest easter egg that I remember. Or at least I can’t think of an older one right now. Suggest older ones, I dare ya! 😉
Lol! Trinity, here i come!