I absolutely love his variations. I think he's doing a class at IAMPETH this year. *sighs*
Natascha, if you can find a copy of the Speedball Handbook, there is a lovely exemplar of Mike Kesceg's Pointed Pen variations.
I took a class from Jane Shibata here in LA who learned the script from Mike and uses his method. It was one of those experiences that really clicked for me and made my calligraphy go an extra step.