Family Ties - Season 2 Episode 3 : The Harder They Fall 1989

Alex anxiously awaits a crucial college recommendation from his English teacher and urges Steven and Elyse to butter Mr. Tedesco up on parents' nite at school - but the obnoxious Tedesco is so insulting that Elyse slugs him, and a horrified Alex entreats Steven to make amends. The usually calm and non-violent Elyse is amazed and ashamed at her uncharacteristic behavior, though Tedesco ""asked for it"". Steven visits him and after being subjected to disparaging remarks about his wife, winds up repeating her deed. Finally Tedesco, who does recognize Alex's intellect, accepts an invitation to the Keaton home where he alienates everyone again. Alex must decide whether a glowing recommendation from an influential but disgusting man is worth groveling for.