Bob Guza has the best job in California. That’s just my opinion, but take a look at this deal: At 68, his work clothes are a ball cap, shorts and flip-flops. He sets his own hours and gets paid to hang out on the beach all day with his toys, which include a sand buggy, a jet ski and a drone. Guza retired in 2012, but after a month off, the professor emeritus couldn’t think of anything better to do with his time, so he went back to work.