Once upon a time the King of Cool, otherwise known as Dean Martin, was a partner in a restaurant on the Sunset Strip. 
The restaurant was a hit in the 1950s and his friends had credit there:
By the 1960s Dean and his partners had been to court and Dean said, “Any actor who opens a restaurant should have his head examined” – the partnership was dissolved.
The Rise and Fall of Dino’s Lodge by Kliph Nesteroff – WFMU’s Beware of the Blog.
This is a menu from the 1950s:
