DVDs - What are your essentials?

[Evil Chris]

No matter how many you name.
What are the absolute essential movies that you MUST own for your own collection? These are the ones you can usually think of right away, off the top of your head without even thinking about it much. Mine are:

American Graffiti
Star Wars IV - A New Hope
Apocalypse Now
Castaway

[TastyDollars Ray]

Sopranos...all of them
GodFather 1 and 2
Scarface
and
Jaws

[Evil Chris]

I forgot to add.... Office Space