Watch Big Star Little Star Online at Couchtuner. Hosted by five-time Emmy nominee and Critics’ Choice winner Cat Deeley, Big Star Little Star is a fun-loving celebrity family game show which pairs stars with their kids as they playfully test their knowledge of one another. All in good fun to win money for their chosen charities, each episode will feature three famous families as they reveal the most hilarious behind-the-scenes moments about their real lives.