When Kaley Cuoco commits to something, she goes all in.
“I am black or white,” admits the “Big Bang Theory” actress, 31. “There is no gray area.” Everything she likes, she’s obsessed with; everything she wants, she wants it now. Like, for instance, her cocktail.
After sliding into a banquette in the lobby bar of the Hollywood Roosevelt Hotel, the server takes her order (a bourbon-based Sazerac), then races off, apparently in response to one of Cuoco’s delightfully deadpan comments. “I said, ‘I always start drinking at 4, and it’s already, like, 4:30, so I’m getting jittery.’ I think she thought I was serious!”
But then, Cuoco — dressed in a “casual” black St. Laurent T-shirt, vintage army pants and pink spike-studded Valentino slides — has a pretty commanding presence. How else would she have ended up on one of the highest-rated shows ever on TV?
Her irresistible mix of sunniness and sass was apparent from her childhood in Camarillo, Calif. Her father (a longtime firefighter who now works in real estate) and stay-at-home mom supported her interests early and often. Cuoco started playing tennis at age 3 (“I was basically born on a…