Tournament: Best "One Day" Movies (1 Viewer)

Movies where all the action takes place within a 24 hour period. I'll say that flashbacks are okay, IF they are very brief and very few. Concert films don't qualify. I may make other rules as we go along.
Everyone gets 3 noms and 3 seconds (obviously, you cannot second your own nomination). I'm aiming for 32 entries, but may go more or less depending on interest.
I've submitted 10 nominations to start the ball rolling. Like everyone else, my nominations must be seconded to be in the tourney.
In the tournament:
After Hours
The Bicycle Thief
Do the Right Thing
Dr. Strangelove or: How I Learned to Stop Worrying and Love the Bomb
The Lady Vanishes
Nominated:
12 Angry Men
Airplane!
American Graffiti
Before Sunrise
Dog Day Afternoon
Evil Dead II: Dead By Dawn
A Hard Day's Night
High Noon
It's A Mad, Mad, Mad, Mad World
My Dinner With Andre
Night of the Living Dead
Picnic at Hanging Rock
Playtime
River's Edge
Rope
The Trouble With Harry

I nominate:

After Hours
Before Sunrise

I nominate:

12 Angry Men
Dog Day Afternoon

I second:

After Hours

I'll nominate

A Hard Day's Night
It's A Mad, Mad, Mad, Mad World
The Lady Vanishes

I'll second:

Dr. Strangelove

Good idea, Jason. This should be fun.
Nominate:
Gosford Park
Playtime
Picnic at Hanging Rock
Second:
The Bicycle Thief
Do the Right Thing
The Lady Vanishes

Gosford Park doesn't take place in all one day...

Nate is correct. It takes place over one weekend. :b

Why is it that every girl around here is ugly? Or has a boyfriend?
Since I could not tell the difference between a weekend and 24 hours, I have one nom left.
Nominate:
American Graffiti
Girls don’t pay. Guys pay.

I'll nominate High Noon and have to come back for the seconds and other nominations.

I'll nominate Who's Afraid of Virginia Woolf?, Arsenic and Old Lace and Fail-Safe.
I'll second:
12 Angry Men
Dog Day Afternoon
It's A Mad, Mad, Mad, Mad World
I considered the following movies, but wasn't really sure whether or not they take place in a 24-hour period:
Cat on a Hot Tin Roof
Glengarry Glen Ross
Planes, Trains and Automobiles (If I remember, it's probably more than 24 hours.)
Pulp Fiction

I second "Run Lola Run".

I nominate:
Night of the Living Dead

I nominate Safety Last.

I third Run Lola Run.

I'll nominate Dazed and Confused and Go.

This is a lot harder than I thought it would be!
Nominate:
Die Hard
Magnolia (??)
Toy Story 2 (??)
Second:
American Graffiti
Before Sunrise