Seasons 1 & 2
On Disc 1, go to the "Extras" section. Select the chili to reveal three minutes of camera tests for lighting and coloring of the apartment once the show was picked up after the pilot. The audio is a voiceover by Tom Cherones and someone else.
On Disc 3, go to "Extras" and click on "Inside Looks". Select the large fortune cookie and you will reveal an "Inside Look" on a discarded episode "The Bet".
On Disc 4, go to "Set Up". Navgate to the stain from George's hospital. Select it and you see a comparison of Seinfeld unrestored vs. remastered.