Hellraiser 4

There is a 23 (?) minute timer on the spaceship.

Thanks Brian at Horror Movie A Day!

Riding In Cars With Boys

Sky Barrister's jacket number is 23.

Zero Day

Movie opens on timestamp June 23rd 2000. There are several more 23s in the movie, mostly timestamps.

I have a picture of the opening scene, I'll post it later.

Watchmen

There are numerous 23s in this movie, including time stamps.