Continuity mistake: When Jack is watching CNBC the bottle of Yoohoo changes position when he yells "thats my deal" and then it changes back again.
Continuity mistake: In the bowling alley scene when Jack is talking to his best friend Arnie about the Fidelity Bank and Trust things move around on the table top. In one view Arnie's beer and glove are touching. The camera cuts to Jack and then back to Arnie where the glove and beer are now inches apart.
Continuity mistake: After Jack makes the chocolate milk for his daughter, the size of her milk mustache changes back and forth in the following shots.