Much like what you see in the movie theater before the lights go down.
Some example. The movie theater business is in the dumps! DVD sales are good, pay-per-view at home, etc., but many theaters are closing.
Why? Due to pure greed mixed in with marketing stupidity, they've managed to piss off many of their customers with their rip-off ticket prices, rip-off concessions, and preview upon preview upon preview before you finally get to the movie for which you paid an arm and a leg to see.
Whatever you do, DO NOT copy the movie theaters! Do the exact opposite!