Chemistry in cinema Part 1

A lot of people like to go to the movies and have a good time. This means to actually be able to see a good film, so that you can collect experiences or comment on it with your friends.

From my experience, there are a lot of expectations in this scenario, and depending of the genre expectations can be either higher or lower. One of the aspects that are always target of critics is the chemistry between the couple starring in the movie: 

Diane and Woody are great in Annie Hall

"You had me at Hello" is no doubt a classic line.
But is the couple Jerry and Dorothy a classic couple?

Jerry Maguire and Dorothy Boyd, Scarlett O'Hare and Rhett Butler, Alvy Singer and Annie Hall, Bonnie and Clyde... I mean, so many couples that have been out there, portrayed by terrific actors with a very solid script and a great director; yet there are times in which one wonders how real it is. At the end of the day, we know that there are actors playing characters and that once "CUT" is yelled in the studio, it's all over. I guess chemistry has to be among the hardest emotions actors have to transmit on screen.

Harry Potter shares a decent chemistry.... or does he?

This got me thinking... and after pondering for a while, I asked myself: what are the best onscreen chemistry couple I have seen? The kind of chemistry that you look and say: "wow, these people really look like they are into each other"... or "praise the relationship portrayed by actor X and actress Y".. or even "what a wonderful set of emotions which I could totally feel connected with." I'm not talking about your usual Twilight/Matrix Reloaded/You've got mail kind of chemistry. I mean no offense, Keannu Reeves and Carrie-Ann Moss looked ok but nothing really special; I am an admirer of what a movie tries to represent and how the plot and characters can absorb viewers into it. 

Will Ghost make my list?
Stay tuned and find out!

So I decided to write a series of movies that in my opinion hold the best chemistry between two characters on screen. I'm not really into things like Top 10 or Top 5; I'll try to write about the ones that impacted me the most, without really looking into a specific fixed number. I hope you enjoy this homenage.

I want to appoint something: I'm not specifically talking about romantic movies per se. Any film with a couple makes it for me: adventure, comedy, drama, romance, sci fi. What I'm focusing is on the chemistry and not the genre.

So gosh, many movies with great couples:

Bonnie and Clyde

An affair to remember

Ghost

Sleepless in Seattle

Smokey and the Bandit

Speed

Casablanca

Life is beautiful

It's a wonderful life

Vertigo

Annie Hall

Jerry Maguire

....

...

..

which one would you nominate? Which one do you think I will include?