There’s a sweet irony watching long-time SELF board member Larry Hagman turn the world-renowned oil tycoon J.R. Ewing into a conscientious solar executive while retaining his famously wicked laugh. “Shine, baby, shine,” chuckles a fiendish Hagman as he coins the new energy mantra for our time in a series of advertisements for SolarWorld. He’s playing off “Drill, baby, drill” of course,…