After a long dry spell... you post twice in one day? No, that's not it.
After fighting with the product build, unit tests, and automated smoke tests for two days and you finally get the build working and start allowing commits to the repository... the first commit after all of that breaks the build again...Gahhh!! It's a good thing I was there to warn the culprit before the engineer who has spent the last two days (and nights) getting everything back in shape, came storming into this guy's office... armed to the teeth with one of the monster Nerf cannons laying around here. The hallways sure did light up for a few moments ;-).
I'm highlighting all of this because no matter what processes you put into place, and how many emails, wiki posts, meetings you have, ultimately it will boil down to simple human error. Just like the old adage, the more foolproof you make something, the more the world seems to hand you smarter fools :-). I know I've certainly been just as guilty as the next guy of breaking the build. Are there any of you out there with some great (infamous, funny, or just plain scary) stories of how against all odds, a member of your team managed to bypass all the safeguards and promptly broke the build? We all have stories of some "former team member" who did some of the craziest stuff, but what about your most embarrasing moments? These are the kinds of moments that, while infuriating at the time, you will look back on and find the shear humor and irony of the entire situation. What is your WTF story?