Air date: 9/12/90

Doogie starts his third year of residency worrying that he's becoming too busy with work to enjoy his youth.

Guess who's Coming to Doogie's

Air date: 9/19/90

Former gang member Raymond Alexander begins working at the hospital, but his past comes back to haunt him when a patient's watch is reported missing.

Ask Dr. Doogie

Air date: 9/26/90

Doogie has to wear disguises after his “Ask Dr. Doogie” public-service ads on the music channel make him a little too famous.

C'est La Vinnie

Air date: 10/3/90

Vinnie gets stuck in an elevator with this French teacher, who just happens to be pregnant.

Car Wars

Air date: 10/10/90

Doogie's dad refuses to let him buy a classic car; a frightened mentally handicapped patient turns down lifesaving treatment.

Doogie Sings the Blues

Air date: 10/17/90

A once-popular singer wants to make a comeback, but there's one problem: Doogie has to schedule him for surgery.

Academia Nuts

Air date: 10/24/90

Vinnie asks to “borrow” one of Doogie's old biology papers. Doogie is forced to make up an illness for a wealthy hypochondriac.