Cheers (1982)

S2E5 Sumner's Return

Diane's brainy ex-fiancé reappears, determined to win her back, leaving Sam feeling anxious and insecure. In an effort to compete, Sam dives into Tolstoy's works, hoping to impress Diane and prove his worth. However, the pressure of measuring up to her former partner triggers a panic attack, showcasing his struggle with feelings of inadequacy.