The Simpsons (1989)
"D'oh!" (Homer Simpson)
Honorable mentions : "Excellent" (Mr. Burns) "Hi-diddily-ho!" (Ned Flanders) "Ha!" (Edna Krabapel) "WhaaaaAAAAAAAAAAAATTT!" (Moe Syslack) "Yaaay!" (Rodd and Todd) "Skinner!" (Superintendent Gary Chalmers) "Glavin" (Professor John Frink)