Kiefer Sutherland stunned bar staff when he bought all of their customers a drink.

The '24' actor and crew members of the hit US drama series popped into The Spot in San Pedro, California, after finishing a shoot, as they wanted to relax with a few alcoholic beverages.

According to an employee, Kiefer was enjoying scotch and cokes and decided to buy everyone in the venue - about 30 people - leaving him with a $500 bar bill.

He then left staff an impressive $200 tip when he left at the end of the night.

Kiefer is not the only celebrity to leave a generous amount of money.

Earlier this year, Johnny Depp gave a staggering $4,000 gratuity at a Chicago restaurant.

The 46-year-old actor was celebrating a red carpet screening of his new movie 'Public Enemies' with a group of friends - including his co-star Marion Cotillard and the film's director Michael Mann - at Gibsons Bar and Steakhouse when he left the mammoth tip.

Waiter Mohammed A. Sekhani confirmed: "Depp hosted a party of 15 people, including Mann and Cotillard, and the tip was split 12 ways. Depp is the finest of all the stars I have ever waited on. And he is a true icon, and his ability to respect others is phenomenal. He loves Chicago, and Chicago loves him. Depp is one cool and generous dude."