JasperLamarCrab at 2016-04-29 21:31:51:
PULP FICTION employs this trope, though in typical Tarantino fashion it turns it on its ear by having the protagonists find the briefcase almost immediately, plus we never find out what the hell is really inside it.
Katha at 2016-04-30 13:59:37:
Some Clooney Movies fit as well: Ocean's 11 - 13, Welcome to Collinwood; Or Coens' Fargo Run, Lola, Run