Hidden trailers
Select either "Extra" option at the main menu. Highlight the "Next/Back" or "Resume" icons and press [Right] to see various WWE/nWo trailersor a WCW interview.
Hidden vignettes
Select the "Breakdown" option at the main menu. The screen will say "bReakdown paGe 1" with the chapters you can select. Select either chapter 14 or 15 (both are not on the screen) to see two hidden Titantron-like vignettes. Once you have viewed these, select "Page 2". Then, select 14 or 15 again (also not on the screen). Chapter 14 is another vignette, while 15 is an original New World Order (nWo) commercial from 1996.