Nickelodeon has introduced a large portion of its back catalog to the US iTunes Store, the TV studio has announced. As a part of its Nick Rewind selection, the company now has the beginning seasons of a number of older kids' shows, including Doug, Hey Arnold and Aaahhh Real Monsters. More common are "best-of" compilations, for shows like Rugrats, Rocko's Modern Life and Clarissa Explains It All.

Individual episodes are priced at a standard $1.99, while seasons and best-of compilations are being priced between $8.99 and $19.99. The number of episodes available per show currently varies between five and 13.