When Woody says "I like it" during the take in the studio, his voice cracks. When the commercial is aired in the bar, his voice sounds normal.
When Sam leaves the commercial shoot after cracking up, the boxes of donuts are arranged differently than they had been after Norm left.
When a person is hypnotized even if the hypnotist doesn't tell them to forget everything what they were told to do will wear off very quickly so Lilith would not still be responding to the cues such as "Brie cheese" and "Tambourine."