The Usual Suspects (1995)
NOTE: These commentary tracks are only on the "Special Edition" Usual Suspects DVD, not on the original DVD release. The Blu-ray editions (both the original release from 2007 and the 20th Anniversary Edition from 2015) also do not contain any commentary tracks.
The Singer/McQuarrie track was also available on a special edition VHS release that included a second videotape with the commentary track on it.
There are rumors that a Bryan Singer and Kevin Spacey commentary was recorded for a planned 2005 release that never happened, but that track has not been released.