Age: 36

Character: Annoyingly nerdy theoretical physicist Sheldon Cooper on CBS’ The Big Bang Theory.

Shock and aww: “Every once in a while [fellow Emmy nominee and CBS star Charlie Sheen] will drop by and watch a run-through, and it’s just so jarring, because he’s a face and a name I’ve seen all my life. So when he walks in and goes, ‘Really nice work today,’ I’m like, ‘Oh, my God! That’s Charlie Sheen saying that!’ ”

Resemblance to things past: “When I started acting, I was compared more than once to Don Knotts. I don’t know if it was meant in a nice way, but I really love Don Knotts. There’s definitely a little Don Knotts floating around in my subconscious, along with a touch of Lily Tomlin’s Ernestine, and even Pee-wee Herman.”

Geek worship: “They played a clip reel of our show at Comic-Con last year, and I suddenly realized, we’re the guys who go to Comic-Con! They showed Leonard grabbing his lightsaber when he thought someone had broken into the house, and I thought, who’s going to have that by their beds except the guys who go to Comic-Con?”

Naked insecurities: “When I get in clothes that are expensive and good-looking, I feel like I don’t look good enough to be wearing them. I wear crap I got four years ago at Forever 21. I’ll see a T-shirt on sale at the Gap and buy 15 in the same color and wear them till the moths eat them.”

Z Zegna leather sweater jacket, $995, zegna.com; Alternative Earth V-neck, $35, alternativeapparel.com; Levi’s 511 Skinny Jeans, $68, levi.com