If you manage to get a copy of
Sonic Rush for your DS (or borrow/steal one from a friend), try to
Spoiler Below get all 7 Chaos Emeralds as Sonic and all 7 Sol Emeralds as Blaze
to get to the Extra Zone, and watch the first cut-scene.
Spoiler Below Eggman says he wants to make an "Eggman Land".
Off-Topic- You're wlecome.