Charles M Schulz drew his beloved Peanuts strip for 50 years until he retired on 14 December 1999. By then, the unassuming cartoonist had built a billion-dollar empire.

New film Saturday Night celebrates the legendary comedy show's origins – but last weekend's poor new season premiere confirmed it's on rockier ground than ever. What went wrong?

In archive BBC interviews the creators of the 90s TV series talk about their unique vision – and how the eccentric character at its centre was based on the director's own personality