#9. When you've tried everything you can think of and restarted all of the applicable services 5 times so you finally give up and reboot the server. It fixes the problem but now you don't know what the actual problem was. #@$%!
#8. I was rushing at the end of my shift trying to get this script done to run a query against one of our DNS servers every two minutes to see if I can catch some lag throughout the day and I ended up with a script that sends half of the output to a log, the other half to my email. I am going to end up with over 9000 emails and log entries that I have to piece together when I get back. It's so ridiculous and I love it.