Desperately Dangerous: Villains of Wisteria Lane is a DVD extra which was included on a 7th disc set from Best Buy. It is exclusive and can not be found on the six disc set. Thanks to DesperateFan for uploading these!
It includes Behind the Scenes Footage and Interviews with Teri Hatcher, Marcia Cross, Marc Cherry, Nicolette Sheridan, Felicity Huffman, Eva Longoria Parker, Ricardo Chavira, Brenda Strong, Andrea Bowen, Doug Savant, Kathryn Joosten, Pat Crawford Brown, Kiersten Warren, Laurie Metcalf, Dixie Carter and Valerie Mahaffey.
Part 1
Part 2 below.
Part 2


Ah, I see. Thanks for the info!
This was actually a Bonus disc from Circuit City that came with Season #3. I’m so glad someone posted int on YouTube.