When Burt meets Betty Templeton at the bar and Lulu Pfeiffer walks in, starting the havoc inside it, there is a bottle of Stolichnaya vodka (a real brand) sitting among other drinks in the background. A couple frames after, the same bottle reads "Slotichnaya".
The wheels on the agent's Mercury Grand Marquis were different in the slide show than when the agents were originally seen in it.
When Betty walks into the bar, after Bert has entered and Lulu has gone to the bathroom, Argyle says, "Holy shoot," but his mouth moves as if saying "Holy shit."