US DVD release replaces some music used in the show, including the theme song. Other releases (ie. the German release by Kinowelt) feature the unaltered episodes.
For its HD release, the entire show was reframed to 1,78:1. In addition, many songs used in the original broadcast version were replaced. Also, some scenes deemed too sexual were reedited or removed (e.g. the topless scenes in the pilot).