Halo has some chances. At current pace it would need 62 weeks to break 10 milion. Sales will drop but there is more around 90 weeks left until end of 2009 so it won't be easy but is possible.
No Final Fantasy game broke 10 million mark, so it's rational to assume than FFX13 won't do it either.
I think that GTA4 has a chane on each platforms even if GTA3 didn't make 20 mil. This generation may be bigger than the previous one. I also think that GT5 has a chance.
On Wii SMG and Brawl should make it. Maybe WiiFit depending on its success in USA/Europe.
@johnsobas:
Surely not. It's at 2.9 million with 16k per week. It's not as popular as it used to be: for 4 Wii's sold there are around one WiiSport sold (it used to be 2:1). I doubt it will make 5 million by end of 2009.