My buddy secretsk8r came through again for me. I got my regice and then headed over to the snowpoint temple and after 4 tries (failing when the durn thing struggled and then passed out and I had to reboot) I got the Regigigas! 
This puts me at 482 but I'm still missing 8. 
Now the 8 I'm missing include 4 event pokemon which I probably will never get (unless someone just wants to trade data. 
The hardest to find has so far been Electivire. I can't even find a spare electrizer from someone. It's so annnoying. 
So, here's my list...
Mewtwo
Mew (non hack)
Celebi (non hack)
Entei
Suicune
Latios
Jirachi (non hack)

(Add the two event pokemon not released yet, and you get 10) 
Finally, I guess I'm going to have to figure out a way for folks from this site to get ahold of me without relying on the stupid PM system. I spend a lot of time online, but not on here.  Unless it's game related, I usually hang out on other forums, so I really need to make sure people can get ahold of me via IM or something.  
I'll look into this and Get back to you.