Hollywood has made more than half a million movies in the past 100 years, but only some have a real impact and resonate with audiences. There's no foolproof formula, but when likeable characters with chemistry collide with a timely storyline, the cinematic results can be explosive.
From Clarke Gable and Vivian Leigh in 1939's epic romance "Gone With the Wind" to Richard Gere and Julia Roberts in 1990's "Pretty Woman," select onscreen couples have sizzled and tantalized moviegoers. But out of this elite tier of films, which onscreen couples and which romantic movies are the best of all time?
ABC News and People Magazine put that question to a popular vote, asking movie fans to cast their votes for the most romantic couple of all time, the best chick flick and other movie categories as part of the "Best in Film: The Greatest Movies of all Time" special.
Over a half a million votes were cast in classic movie categories like the best line ever delivered, the greatest character of all time, best action flick, best movie musical, comedy and more. The results, including America's vote for the best movie of all time, will be revealed during the ABC News and People Magazine "Best in Film" broadcast special, Tuesday at 9 p.m. ET on ABC.
Which onscreen pairs took home the title of the most romantic of all time?
5. Spencer Tracy, Katharine Hepburn – 10%
Spencer Tracy and Katharine Hepburn, also known as Spence and Kate, first met on the set of the 1942 movie "Woman of the Year" and movie magic was born.
"They are the originals in terms of the witty repartee," said Alynda Wheat, People Magazine movie critic.
The duo starred in nine films together, including "Without Love" and "Adam's Rib," arguably their best film. Their pairing on screen became legendary -- a perfect blend of sweetness and sexiness, humor and passion.
"Spencer Tracy and Katharine Hepburn were such a great couple because they were great fighters. They didn't take any guff from each other, but yet they loved each other," said Los Angeles Times awards expert Tom O'Neil.
Their battle-of-the-sexes clash not only steamed up the silver screen but in real life as well, starting a lifelong romance between the two, although they never married.
4. Humphrey Bogart, Ingrid Bergman in "Casablanca" – 12%
Set against the backdrop of a Moroccan nightclub during World War II, Humphrey Bogart and Ingrid Bergman play former lovers, Rick Blaine and Isla Lund, in the 1942 classic "Casablanca."
"'Casablanca' is the cinematic ultimate expression of 'if you love them, let them go,'" said O'Neil. "Rick [Blaine] must choose between his romantic love of [Isla Lund], and his real love for her health and safety. Does he let her go and live or does he selfishly try to keep her?"
3. Richard Gere, Julia Roberts in "Pretty Woman" – 14%
It's the ultimate Cinderella story when Edward Lewis, a tough-as-nails businessman played by Richard Gere, hires prostitute Vivian Ward, played by Julia Roberts, for companionship during a week-long business trip to Los Angeles, and against all odds, falls in love with her.