Character mistake: The commentator says "avalanche of power shots by Ivan Drago." Viktor is the one in the ring. Ivan is the father. If you have the subtitles turned on, it even says Viktor in the subtitles instead of the spoken name, Ivan. (00:55:45)
Revealing mistake: The tapered half of the baseball bat was leaning against the coffee table at about a 60° angle, but after Dave said, "The bat?" the camera showed it sticking straight up from (perpendicular to) the floor. Dave's lower body is then shown walking past the bat (which reaches to his waist) and stopping, at which point the bat fades into his leg until it is almost invisible. The next view of the bat shows it leaning against the coffee table again, but the coffee table is closer to the couch. (00:09:08)
Continuity mistake: In the van after they pick up Preacher and he mentions it's cold. Preacher leans up to the front and looks over Dax, asking about his head being too big. There are several cuts between shots here before Preacher slinks back into the van and his position of his head and shoulders changes between almost every one in various positions. (00:33:50)
Continuity mistake: When the police knocks at the door of Simon's trailer, Jean-Hugues Anglade 's arm changes position between shots as he talks to his daughter.
Continuity mistake: The position of Don's baseball cap on the table changes two times. Initially, the cap is near the corner of the table with the visor and letter "P" roughly parallel to the front of his body. After he pours beer into his glass, the visor is angled more toward the corner of the table (even though the camera appears to pan around it). When Don brings Mike back to the table, the cap visor is pointed toward Don and is at a differently angle (more parallel to the front of his body again). (00:00:09 - 00:01:47)