If you upload a lot of video to YouTube, then having to constantly change the standard settings can be annoying. Google Operating System points out that you can now change your default settings for videos to match what you normally do.
The account defaults page lets you change a number of options, including the category and licence you use, and regular tags. You can still alter these on individual videos, but if you have a regular process, this should make it a little speedier. (I especially like being able to set a fixed category.)
Default Upload Settings for YouTube Videos [Google Operating System]