ACC:
Clemson and UNC have clinched and will meet in the ACCCG.
B12:
At 7-0, TCU has clinched a spot because the worst they could do would be tied for 1st/2nd and the top-2 go.
At 5-2, KSU has the inside track for the other spot but it is by no means locked up as there are three teams one game behind KSU. KSU beat one (OkSU), lost to one (TX), and has yet to play the third (Baylor).
P12:
Oregon's loss to Washington really opened things up as there are now three teams with one league loss (USC, Oregon, Utah) and the two-loss Huskies and Bruins are not out of the running.
SEC:
UGA and LSU have clinched and will meet in the SECCG.
EDIT: Noted UCLA's loss.