I was lucky enough to work with Mark on a number of occasions on a project late last year. He is the sort of guy who you love to have around the office because he is very enthusiastic about SharePoint, he knows it functionally inside out, he understands what it can do for people and he creates solutions to business problems that take days or weeks, rather that months. The best part of course is that they actually WORK.
Anyway, having explored every possible capability of SharePoint on its own he has decided to start working with InfoPath. I hope he follows this post up with the rest of his journey as I think its an area a lot of people would like to jump into.