Mr. Costa is a compassionate teacher who challenges his students to the utmost.
Nasty Nate is god. There's really no better way to describe him. He cares so much about what he teaches, and will do anything fo his students. Plus he's an excellent baker.
The man, the legend. He really is an awesome teacher, if a bit a formal and intimidating. No one wants more for you than this guy. He just won't take any BS.