The film you're thinking of is the blackly humorous 1974 telefilm "It Couldn't Happen to a Nicer Guy."
Paul Sorvino starred as a sort of everyman who is kidnapped at gunpoint and taken home as a prank by a beautiful woman, played by JoAnna Cameron. When she's finished with him she drops him off naked in a nearby small town and left to explain the circumstances to his wife and the authorities.
The film is notable for having more or less launched the career of longtime TV star Adam Arkin. The star, who's best known for his role as Dr. Aaron Shutt on "Chicago Hope," had only appeared in two tiny film roles (his characters didn't even have names) before he appeared in "It Couldn't Happen to a Nicer Guy." But shortly after he had the lead role in the sitcom "Busting Loose," and the TV roles got bigger from there. He was most recently seen starring in the NBC crime series "Life."
It's also notable for being Sorvino's first lead role. He'd shown up in a few big-screeners before that, but never in very large roles.
Shortly after appearing in this film though, he landed a guest role on the classic '70s crime series "The Streets of San Francisco" as a maverick cop named Bert D'Angelo. The role proved popular enough to win a spinoff, and Sorvino had his own series. It didn't do well though, and "Bert D'Angelo/Superstar" was cancelled after just one season.
It's not too surprising; Sorvino's never been a leading man. He's made an impressive career instead as a supporting man, in such films as 1990's "Goodfellas" and the Oscar-winning 1981 film "Reds."
Cameron's career never really caught on; this and a string of other telefilms and bit parts led to the biggest role of her career, starring for two seasons in the forgettable action/fantasy series "Isis," where she played an archaeologist who stumbles across an amulet that turned her into an evil-fighting superhero. The series was actually a spinoff of the 1974-1977 series "Shazam!," a TV adaptation of the popular comic series of the same name.