If you've thought about becoming a law professor, you probably know that it's hard to become a full, tenured professor. You have to go to the right school (cough, Yale, cough) and then spend the next several years writing articles and doing research.
If you're a practitioner, that's not a likely sequence of events. But what you can do is become an adjunct -- an untenured "guest" professor who teaches courses here and there (though, increasingly, more than just here and there).
Want to teach young minds, and make a little extra money on the side? Here are a few potential ways to do it: