Kunal Nayyar

When we first started 'The Big Bang Theory,' I would get incredibly nervous because it's such a big show and I was just out of graduate school. I'd come in and have this huge responsibility for the one line that everyone hopes will bring down the house.

All my grandchildren bake. On a Saturday, Annabel's boys, Louis and Toby, always bake. Louis makes a chocolate cake, Toby makes banana or lemon drizzle. They're 12 and 10, and they can do it totally on their own. My son's twin girls, Abby and Grace, are 14; they make birthday cakes and like to do it on their own with Mum out of the way.