Because deep down you want to.
First, a few obvious ones –
You’re gonna need a bigger boat.
Leave the gun, take the cannoli.
You had me at hello.
Here’s looking at you kid.
Jaws, The Godfather, Jerry Maguire and Casablanca respectively.
Everyone knows those, but can you guess these?
Put some Windex on it.
What we have here is a failure to communicate.
Are you not entertained?
Take a guess and then comment one of your own.