E = MC something

So, I was watching Curb Your Enthusiasm on DVD when who should make an appearance but Super Dave, the guy with the stunt man schtick who used to appear on Letterman. I always loved him, he was the master of the deadpan delivery. Plus he's Albert Brooks brother. But I'd never seen him without his hat on...he looked weird. Was that really him? The credits rolled and, yes, I recognized the last name; Einstein. Bob Einstein. I knew that because one of my favorite lesser known facts is that Albert Brooks' real name is Albert Einstein. Can you believe it?