http://www.bbc.com/news/entertainment-arts-36648131
Italian actors Bud Spencer and Terence Hill
worked so well as a screen couple, they made over a dozen films
together from the late 60s to the 80s. They first appeared together in
the 1959 film Hannibal, under their original names of Carlo Pedersoli and Mario Girotti.
http://tvtropes.org/pmwiki/pmwiki.php/Film/Trinity