Kaley Cuoco

Kaley Cuoco-Sweeting is a comic actress from the television sitcoms 8 Simple Rules and The Big Bang Theory. Cuoco-Sweeting began her professional TV career before she was a teenager, first with guest shots, then with a regular role in the series Ladies Man (2000-01). For three seasons she played John Ritter's sexy daughter in 8 Simple Rules (2002-05), and she joined the cast of Charmed in 2005 for the show's eighth season. Since 2007, she's played Penny, the sensible neighbor to the nerds of The Big Bang Theory (starring Jim Parsons and Johnny Galecki).