If there's one thing that's always consistent with events, it is that "nothing is ever consistent" and you must plan for "Murphy's Law" to reign. Someone took this concept to a new level and started a great blog called "Breaking Murphy’s Law".
Written by someone who shares what he's learned from many years behind the curtain, Lee Pott's goal is to provide a platform for event professionals to share tips and lessons learned so others can avoid similar mistakes when producing shows. I can remember learning how important it is to have two laptops running simultaneously at every show when someone "kicked" the power cord loose and we went to blue screen. I learned to always tape the presenters lavaliere mic to the on position after our CEO flipped it to "off" while walking onto the stage - in front of 700.
If you're responsible for the show produciont/AV or any aspect of what happens on the stage this is a great site to follow. From Lee's Breaking Murphy's Law: I think everyone also recognized this as an important part of participating in their profession. A trick, tip or technique learned while listening to these stories could be crucial to saving a meeting as well as a career. Sharing your own stories (even the ones you would rather keep to yourself) was expected and strongly encouraged.