Evil Things

The group was last seen at 23 Muskeegee Road in Woodstock, NY, according to the letter sent with screeners (movie is not in release yet). See also the picture.

The Vanishing (1988)

2314SM30 is the license plate number of the killer.

Up in the Air

George Clooney's company keeps 23 people on the road at all times.

Submitted by Brian

The Cabinet of Dr. Caligari (1919)

The sleepwalker, Cesare, has been sleepwalking for 23 years

1919 people!

P2

The address for the girl's character (I missed her name)'s work is given as "23- 70 Park Avenue".

Scrooged

When Frank is in the elevator with Death, the buttons begin to smoke, but only floor 23's button burts.

The Lovely Bones

The killers house is number 23.

ELF

The meeting room is 37523.

Daybreakers

Ethan Hawke's villanous brother is a member of the 23rd regimen.

Death Note

Light causes 23 heart attacks among criminals.

Alice

Alice's dad disappeared on March 23rd.

Into the Wild

Chris/Alex states he is 23 years old.