The Road To Hong Kong (1962)

Starring Bing Crosby, Bob Hope, Joan Collins, Robert Morley, Walter Gotell
Directed by Norman Panama
(actor & director credits courtesy IMDB.com)

A pair of con artists find themselves shot into space after memorizing a top-secret formula for rocket fuel wanted by a sinister organization.

The last of Crosby and Hope's "Road" pictures, coming a decade after their last one, finds the duo well-aged, but still intent on pursuing the youthful Collins, relegating their longtime co-star Lamour to a single musical number.  Her performance with Hope though is probably the funniest in the picture as their embraces are interrupted by a series of fish trapped in his costume.  The rest of the film doesn't contain gags nearly as inspired, for example copying a silly sequence from Charlie Chaplin's Modern Times which is less funny here, but the snappy patter between the leads is as memorable as ever.