I could understand porting Sonic Adventure 2 as it was less than a year old when it was released, but Sonic Adventure 1. That game launched with the DC back in 99 almost 3 frigging years ago. I hope they include a whole lot more to get people to buy it. And take a lot out like Big Cat levels argh those were dumb.
On the brighter side, there is the Sonic Mega Collection. I mean come on who can't get excited over the prospect of playing all the Genesis Sonic and maybe some others on one CD for your GCN. That is godly. Maybe with spruced up graphics like Sonic Advance.
Which reminds me Sonic Advance 2 was also announced for the GBA.
Edit:Also forgot the link
http://planetgamecube.com/news.cfm?action=item&id=3157