Unfaithful

Connie Sumner

Charlie Sumner

Ed Sumner

Paul Martel

Gloria

Lindsay

Bill Stone

Train conductor

Bob Gaylord

Other businessman

Tracy

Sally

Café bartender

Tim

Frank Wilson

Businessman #1

Businessman #2

Businessman #3

Businessman #4

Grumpy teacher

Parking Lot Attendant

Other Woman

Man with suitcase

Passerby

Crying Boy

Father of crying boy

Det. Dean

Det. Mirojnick

Grandma

Aunt Rikke

Uncle Russell

Aunt Maria

Uncle Les

Dry Cleaner

Beth

Josh

Jeff

Auctioneer

Poppy (the dog) (uncredited)

Waiter (uncredited)

Friend at Dinner (uncredited)

Child in Park (uncredited)

Child in Park (uncredited)

Deli Guy (uncredited)

Jerry (uncredited)

Armored-Car Company Office Manager (uncredited)

Meg Ryan was the original choice to play Connie, but Alyssa Milano was cast. After she was forced to turn the role down due to her commitment to the TV series Charmed (1998), these actresses were offered the role (and they turned it down too): Portia de Rossi; Jodie Foster (she chose to star in Panic Room (2002)); Kristin Davis (she had a commitment to the TV series Sex and the City (1998)); Portia de Rossi; Kyra Sedgwick; Brooke Shields; Hilary Swank; Kate Winslet Also, Tori Spelling was briefly considered for the role. Even though Josie Davis and Angelina Jolie auditioned for the role, they lost out to Diane Lane. Reportedly, Jennifer Jason Leigh wanted the role too, but this time, it was Adrian Lyne who turned an actress down.

The scene where Connie rides the train home after her first sexual encounter with Paul, and silently remembers the encounter, was filmed in one continuous take. The camera simply stayed on Diane Lane as she went through a series of expressions, and then the scene was cut and edited together.

Brad Pitt and Ryan Phillippe were offered the role of Paul. However during pre-production, the producers decided that Paul be French rather than American, so Olivier Martinez received the part.

Connie's cigarette seems to disappear between shots as Charlie startles her, when she is crying at the kitchen table.

When Connie first goes to bed with Edward, while he's testing his camcorder there is several boxes on the bed. A minute later they are all gone but it seems like neither Connie nor Edward has moved them.

When Edward holds Connie's chin, her mouth is closed. In the next shot, seen from a different angle, her lips are parted.

Edward Sumner: You *talk* about me?

Tracy: Having an affair is nothing like taking a pottery class.

Charlie: Dad, look what I can do. I've been practicing