Productive work day

Wow! My ass is really dragging.
Monday is such a long day. I typically go solid from 9:00 - 5:30 with teaching, meetings with students and office hours. From 6-8, I work while waiting for my son to get out of class so we can ride home together.
I actually really like those two hours. It's just me all alone in the building. I spend the time getting as much work done as I can so I don't have to work when I get home.
Last week I gave my creativity class a chance to use today's class to review for a test or listen to a lecture on creativity and madness. They actually chose the lecture. One student even brought a friend with her who wanted to hear the lecture!
This NEVER happens (though it would be nice if it did more often).
I stayed up late last night and woke up early to prep the lecture. I think it was worth it though.