What is disc 2 of Metal Gear Solid 3

If you have the Subsistence version of MGS3, the second disc (Persistence) has the secret theatre (has funny parodies of in-game cutscenes), Snake vs. Monkey, the original 1987 Metal Gear, and the 1990 Metal Gear 2: Solid Snake. That used to be the disc you used to play MGS3 online, but that has been closed down.