Dr. Robotnik was always called Dr. Eggman in japan they changed it to Robotnik for the west, but there did not for the new versions, remember the death egg? (i think Robotnik is a cooler name).
Sonic adventure was the first DC game i played, i thought it was great, SA 2 was good, but not great. I’m looking forward to the 360 version as i here its going back it its roots.
personally i think Sonic has always was better than mario, not that marios bad just not as good as sonic.
btw i don’t think the franchise will die any time soon as sonic heroes sold by the bucket load (i remember seeing it in the top 20 with something like 58 weeks beside it)
i like shadow in SA 2 but not sure about this new game