Well as on old woman I can name off several other breeds ruined for the same reson Popularity
St Bernards (early 70s and again Beethoven)
Cocker Spaniels
Dobermans (Magnum PI)
Toy Poodles (too cute for their own good)
Chihuaha (see above)
GSD ( hearth home and kid dog )
Jack Russells (Frasier)
Staffies (drug trade)
Greyhounds (yes racing is an issue but the huge outcry produced huge amounts BYB)
Maltese (see poodle)
Shiz-zu (see poodle)
The dogs aren't to blame, We are. I wont even go into the husky phenomenon due to the movie 8 below, People don't think they assume (yes I forgot collies thanks poor Lassie) that all dogs of that breed will be THAT dog. Sad but true.