The Close Encounters scene someone mentioned above is really, really tough to beat!!

Here's a few more:

The diner scene in the original Texas Chainsaw Massacre. Insanity at its best!

The very awkward diner scene in "Buffalo 66." Its mesmorizing!

The Skesis diner in "The Dark Crystal"...where one of them chases that little mouselike critter across the table!

The Eel/Snake/Monkeybrains diner in "Indiana Jones and the Temple of Doom".

The villians invading the home during diner and pretending to be Marc Wahlberg's friends in "The Big Hit". The scene ends with Eliott Gould puking inciting a gunfight!!!!

The "Day-Oh" scene in "Beetlejuice".

--John

Speaking of eating scenes: how about "Night of the Living Dead?" Is anyone who has seen those likely to forget them?

LADY AND THE TRAMP is the best eating scene of all-time. Everyone remembers the spaghetti and meatballs.

When Harry met Sally
Any Soprano scene- They always eating. lol !
Sex and The City
Trading Places- Dan A. and his gf
Seinfeld epis.

Harlem hippo, you get a million cool points for bringing up the dark crystal! mmmmhmm Gelfling mmmmm.

I also like the earlier reference someone made about License to Drive, the ketchup on the mashed potatoes, mmmm.

Here's a few more fun ones:

Funny Farm: Chevy Chase eats the famous "goat balls"
A christmas story, When ralphie's little brother won't eat his meatloaf..."meatloaf, meatloaf, double Beatloaf, I hate meatloaf!" And in the same film, their christmas dinner at the chinese restuarant.
The lost boys..."How are the Maggots Michael?"

9-1/2 Weeks (made eating sexy)
The Loved One (made eating disgusting)
Tampopo (made eating noodles an art form)
Silence of the Lambs (made fava beans a household word)
Saturday Night Fever (made eating at the dinner table a reason to laugh)

1) When Harry Met Sally
2) Lady and The Tramp
3) Chocolat
4) Green Fried Tomatoes
5) Silence of the Lambs

No one has mentioned the breakfast scene in The Miracle Worker??? Folks!

I mean the Bancroft/Duke version, of course... poo to you, Pepsi Girl.

also...
2) Waiting For Guffman- the Chinese restaurant scene... classic Catherine O'Hara
3) Dan in Real Life- Steve Carrell's prolonged reaction when he bites into the burnt pancake
4) As Good As It Gets- any and all scenes when Helen Hunt is waiting on Jack Nicholson
5) The Jerk- pizza in a cup. "This guy is unbelievable. He ran the old Cup 'o Pizza guy out of business. People come from all over to eat this." hahahahahahaha.

Like Water for Chocolate - when the main female character prepares quails in rose petal sauce and raises people's temperatures with that and the wedding feast scene where everyone who ate was randy -- but the wedding cake made everyone sad and sick -- because she had let her tears fall into the batter by mistake!

9 1/2 weeks, the refrigerator scene. Awesome!

Eat Drink Man Woman -- the beginning sequence of the master cook preparing and making a huge dinner for his small family. the preparation and those expert hands flying make my mouth water EVERY time.