Yikes, just realized this scenario:
If Oregon State and USC win out, the Beavers would win the Pac-10 tiebreaker and go to the Rose Bowl. Meanwhile, USC would be a couple of upsets away from playing in the national championship game. The Trojans debuted at No. 5 in the BCS standings and clearly need help to jump the teams above them -- Oklahoma, Penn State, Alabama and Texas.
USC's schedule strength was/is inferior to those other teams. First things, first. USC has to win at Arizona this week.
Just to be clear, USC could lose out for the Rose Bowl but play for the national championship.
USC, 5-1, 3-1
Arizona 5-2, 3-1
Oregon 5-2, 3-1
Oregon State 4-3, 3-1
Oregon State remaining schedule -- Nov. 1, Arizona State; Nov. 8, at UCLA; Nov. 15, at Cal; Nov. 22, at Arizona; Nov. 29 Oregon
USC remaining schedule -- Oct. 25, at Arizona; Nov. 1, Washington; Nov. 8, Cal; Nov. 15, at Stanford; Nov. 29 Notre Dame; Dec. 6, at UCLA
And no I haven't forgotten that Arizona controls its own fate. The Wildcats still have USC and Oregon at home and a Nov. 15 trip to Oregon.