When Tom Hanks was Funny: Splash (1984)

Behold the mermaid! A male sex fantasy in romantic comedy's clothing, Splash is a straight-up head-scratcher at times, but Darryl Hannah brings it as Ron Howard's version of Ariel, John Candy is perfectly effortless as a lovable letch, Eugene Levy is cracks us up with his neurotic paranoia and Tom Hanks...well, as Allan, he's got a bit of a mean streak. It's modern-day mermaids, butt merkins and lobsters for lunch. Jump on in, but just to warn you - the water's a bit gross.