I've seen the fun of "prints everywhere" in production when a colleague forgot to remove a "Why the fuck do you end up here?" followed by a bunch of variables before committing a hot-fix... Customers weren't to amused...
Edit: That was a PHP driven web shop and the message ended up on to of the checkout page
I was at a small roleplaying convention last week. It was great to meet the others again after about a year and game with them. Unfortunately someone was rather generous with their flu viruses and I got my personal helping. So I'm on sick leave for the second say but luckily, according to the test it's just a flu and not the big bad C. On Monday I clobbered together a small template for my sister to build fake computer screens as props for TV shows... All in all a mixed bag of some good stuff and some annoying things...