What is an Epic when it comes to movies?
I read many movie reviews that start like :
"This great Epic of love and..."

I guess 'Epic' must have other elements than just Length..but it seems to be that whenever I read a review about a 3-hours movie or more the word Epic is mentioned...

1) Can anyone name a 3-4 hours movie which is NOT an Epic?

2) Can anyone mention a 2 hours movie which IS an Epic?

3) What makes an Epic besides the Length?

"Come out and take it, you dirty, yellow-bellied rat, or I'll give it to you through the door!"

- James Cagney in "Taxi!" (1932)