You know sometimes you just can't resist it and and thought to yourself "Hey this is the perfect time to put this in...". So go ahead and share with us.
When implementing a radar display, the central pixel has no radar data mapped to it, so usually people just pick something. It was almost no effort to have the pixel flash, reading its next value from a bit string every time it went round. It's so slow, seriously, no one will ever notice.<p>It spells out a message in morse. No, I'm not going to tell you what it it.
I wrote an internal (and tiny) troubleshooting tool where if you pressed the "Support" button you'd just get a js alert saying "You're welcome!" :-)
The landing page had a large hand-drawn graphic of a country landscape with nothing much happening unless you hover over a certain loch for more than 2 seconds whereupon a little graphic of a sea monster pops out from the loch.<p>In another workplace, the retrieval of log files from customer sites had become a paperwork nightmare until a little feature was added that meant shift-clicking the Help > About... button opened an 'admin console'. By the time I'd left there the 'admin console' had seven tabs worth of features.
We replaced an old grails service with Django - for some reason the home button in the grails app would take you to the grails.org website, so naturally it went into the Django app.
I have written many. From writing a long comment in a particularly ugly code with the starting letters spelling F<i></i>* to substituting North Korea for 'The Glorious and Awesome Democratic People's Republic of Korea' for a particular operation. I thought it was catchy.
one of my favorite easter eggs was if you accessed our web app using app.com/pirate/login (instead of en or another locale) -- things got mighty interesting, arggg matey!