Firmly agree -- I'm pretty sure I've said it elsewhere, this was a transformational course for me.
I got my start in product support where a lot of our problems could be solved in SQL. We were encouraged to learn it, but most people were happy with the most basic syntax for DML. I worked through the entirety of Dr. Widom's course and it gave me the fundamental data understanding to be a real value to the teams I've worked for, and I used that opportunity to transition into being a full time developer.
