I always thought Miss Piggy had lovely hair--long, blonde, and shiny, with a nice wave. But I didn't like Annie Sue's hair. Her curls are too frizzy, and they're bright, bright yellow. Reminds me of a clown's wig.
I think Piggy would probably end up taking top honors for best and worst hairstyles!
But yeah, Janice's side ponytail came close to worst - i mean what were they thinking and why did it take ages to change it back? The band got a little bit of a makeover mid-80's and i guess they had a hard time making Janice look 80's while still maintaining her 60's essence so they just said "hey let's give her a ponytail - on the side - it's the 80s and silly hair is the thing right?"
I remember when i was real little watching The Muppet Show, Janice's hair always reminded me of raw spaghetti. And Scooter's eyes reminded me of Spaghetti-O's. No wonder i was often hungry for Italian food watching TMS!
And as much as i always loved Fleet Scribbler, his hair always reminded 6 yr old d.w. of a mop. (Until i learned his name i called him "Moptop")