And recently been reminded of how much fun it is to watch someone who really, really enjoys their work. The example given (By Tam) was Jim Cantore. He is a hoot to watch. But there are plenty others;

Jacques Pepin.
Roy Underhill
Richard Hammond
Oleg Volk (Ok, you don’t often get to SEE him working, but it shows that he loves it. )
Tom Knapp (RIP)
Jerry Miculek
Norm Abrams
Mika Hakkinen

It gives you a warm fuzzy to watch these people do their jobs because they make it seem effortless and they are having so much fun. I bet you can think of a few.