At around $26 online, JVC's HA-S400 Nanotubes are among the better on-ear headphones for the money.
Though they look a little cheap, the JVC Flats are lightweight, comfortable on-ear headphones that sound surprisingly good for sub-$15 headphones.
The JVC Gumy earphones are more stylish than stock earbuds and offer a slight improvement in audio quality--not bad for about 10 bucks.
The JVC HA-NC250 Noise Canceling Headphones make a great travel companion for those who demand quality sound. And they may not be cheap, but they seem that way next to the Bose QuietComfort 3.