Love is in the air... It is Valentine's Day again and what better time of the year to spend a few romantic hours with the your spouse or partner?

Elizabeth Barrett, that most sublime of poets, once wrote: "How do I love thee? Let me count the ways..."

While we wouldn't presume to answer that question with so material and literal a reply, allow us to present the top 10 most romantic films of all time...

Casablanca is a 1942 American romantic drama film directed by Michael Curtiz, starring Humphrey Bogart, Ingrid Bergman and Paul Henreid, and featuring Claude Rains, Conrad Veidt, Sydney Greenstreet, Peter Lorre and Dooley Wilson. Set during World War II, it focuses on a man torn between, in the words of one character, love and virtue. Super romantic wartime film, is the perfectValentine's Day movie. Humphrey Bogart is charismatic and cool and Ingrid Bergman stunning in this movie that beautifully marries the love and war.

Sleepless in Seattle is a 1993 American romantic comedy film directed and co-written by Nora Ephron.
Based on a story by Jeff Arch, it stars Tom Hanks as Sam Baldwin and Meg Ryan as Annie Reed.
The movie was inspired by An Affair to Remember and used both its theme song and clips from the film in critical scenes. The climactic meeting at the top of the Empire State Building is a reference to a reunion between Cary Grant and Deborah Kerr inAn Affair to Remember

Shakespeare in Love is a 1998 British-American comedy film directed by John Madden and written by Marc Norman and playwright Tom Stoppard.
The film depicts a love affair involving playwright William Shakespeare (Joseph Fiennes) at the time that he was writing the play Romeo and Juliet.

Serendipity is a 2001 romantic comedy, starring John Cusack and Kate Beckinsale which was written by Marc Klein and directed by Peter Chelsom.It embraces love and destiny.

The Princess Bride is a 1987 American romantic comedy adventure film based on the 1973 novel of the same name by William Goldman, combining comedy, adventure, romance, and fantasy. The film was directed by Rob Reiner from a screenplay by Goldman.

Some Like It Hot is an American comedy film, made in 1958 and released in 1959, which was directed by Billy Wilder and starred Marilyn Monroe, Tony Curtis, Jack Lemmon and George Raft. The supporting cast includes Joe E. Brown, Pat O'Brienand Nehemiah Persoff. The American Film Institute listed Some Like It Hot as the greatest American comedy film of all time.

Annie Hall is a 1977 American romantic comedy directed by Woody Allen from a screenplay co-written with Marshall Brickman and co-starring Diane Keaton. It examines a romance between a Manhattan comedy writer and an aspiring singer.

Breakfast at Tiffany's is a 1961 romantic comedy film starring Audrey Hepburn and George Peppard, and featuring Patricia Neal, Buddy Ebsen, Martin Balsam, and Mickey Rooney. The film was directed by Blake Edwards.

Love Actually is a 2003 British romantic comedy film written and directed by Richard Curtis. The screenplay delves into different aspects of love as shown through ten separate stories involving a wide variety of individuals, many of whom are shown to be interlinked as their tales progress.

When Harry Met Sally... is a 1989 American romantic comedy film written by Nora Ephron and directed by Rob Reiner. It stars Billy Crystal as Harry and Meg Ryan as Sally. Its the story of two friends falling in love.