Loading DVD player when inserting a DVD!
This is one thing that really annoys me with the way the OS is by default. I often put a DVD in my laptop just as a storage when I travel. I always have to wait until DVD player is loaded and then quit it. I keep the DVD player icon in the Dock so I much rather not have DVD player start up when I insert a DVD. I looked for that option in DVD Player's preferences, but it is not there and it is because it is not a feature of DVD player, but of the OS. So the place to change that behavior is System Preferences. It is in the "CDs & DVDs" section of System Preferences. Here are the behaviors you can change from there: