original version with Marlon Brando of remake 'Dirty Rotten
Scoundrels' with Steve Martin

The original version of "Dirty Rotten Scoundrels" was "Bedtime Story,"
which starred Marlon Brando and David Niven.

Internet Movie Database
http://imdb.com/title/tt0057878/

"[Michael] Caine is in his comedic element as sauve Riviera scam
artist Lawrence Jamieson, a role originally played by David Niven in
the 1964 original version titled 'Bedtime Story'. Back then, Marlon
Brando played the small-time American crook trying to make the big
bucks by moving in on Jamieson's patch. This time, it's wacky funster
Steve Martin who does the honours."

CineReviews: Dirty Rotten Scoundrels
http://www.movie-gazette.com/cinereviews/193

"Dirty Rotten Scoundrels
 1988
This remake of Marlon Brando and David Niven's Bedtime Story teamed
Steve [Martin] with Michael Caine in a very funny movie."

The Compleat Steve: Dirty Rotten Scoundrels
http://www.compleatsteve.com/actor/scoundrels.htm

If you'd like to purchase a copy of "Bedtime Story" on videotape, here
are some sources:

Amazon: "Bedtime Story" VHS
http://www.amazon.com/exec/obidos/tg/detail/-/6301423704

eBay: "Bedtime Story" VHS
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=309&item=6333738194&rd=1&ssPageName=WDVW

eBay: "Bedtime Story" VHS
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=309&item=6334942708&rd=1&ssPageName=WDVW

Google search strategy:

Google Web Search: "bedtime story" brando "dirty rotten scoundrels"
://www.google.com/search?hl=en&q=%22bedtime+story%22+brando+%22dirty+rotten+scoundrels%22

I hope this is helpful. If anything is unclear or incomplete, please
request clarification; I'll be glad to offer further assistance before
you rate my answer.

Best regards,
pinkfreud