Who is your best photography workshop instructor?

According to PDN Readers Survey Zack Arias is the best workshop instructor!!  Zack is an amazing instructor, who is very funny and knowledgeable. I saw Zack on CreativeLIVE before and I loved it. I have wrote about the experience on my blog, CreativeLIVE with Zack Arias!  The genius Jerry Ghionis made the list to! I think he know how to rock the stage, I blogged about that event to.