McGrath was raised in Brooklyn, New York, the son of Gerard McGrath, a machinist and electrician, and Eleanor McGrath, a homemaker. He is of Irish, Hungarian, and Scandinavian descent.
He attended Regis High School and Harvard University, where he studied Chinese and Japanese history and politics. He failed all his Japanese-language courses, but was active as a writer, editor and cartoonist at The Harvard Lampoon, where he was twice elected a vice president, and somehow managed to graduate with honors.
Entertainment Weekly called the "Time and Punishment" segment "one of the most beautifully random moments in [The] Simpsons history".[1]
The A.V. Club called McGrath's "Boy-Scoutz 'n the Hood" episode "pretty much comic gold from start to finish" and "utterly fantastic" and said it "features one of the greatest, most true-to-life depictions of a bender/drug binge in television history".[2]
They also said Dan's episode "Bart of Darkness" "is a hilarious episode that restricts a Simpsons' go-to—Bart as hell-raiser—and mines much of its humor from the cruelties of childhood."[3]
At Harvard he was a prolific stage director: he directed Richard III in a dining hall, using only the tables and chairs as a set, and he once covered the entire Loeb Main Stage in dirt for "Richard's Cork Leg". They are still cleaning up the dirt he left there from 1985.[5]
Tutorial
Recently Dan taught a course in "Comedy and Cultural Theory" at The Center for Fiction in Brooklyn.