It's a great conversation as Donner mentions: his feelings in regards to when he first saw Christopher Reeve as Superman fly; whether or not he holds any animosity toward the studio - or Warner Bros. in particular; his thoughts on Superman II and getting to do his cut, and more.
Donner even mentions he would like to re-shoot Superman at the 2:14 mark! (Maybe he'll get his chance if the Zack Snyder directed Man of Steel tanks!)
The Blue Ray DVD Superman: The Motion Picture Anthology is also available June 13th which includes a 7 disc set with over 20 hours plus bonus footage.
Source: The Collider