Iowa's last-second win over Penn State was a Big Ten thriller.

Stephen Mally/Icon SMI

This week's Conference Power Rankings review the notable conference games that have made this regular season one to remember.
 
ACC

Best Game: Florida State 41, Miami 39
The teams combined for 696 yards of offense, seven turnovers, nine touchdowns and a safety in a wild affair in stormy Miami. The 'Noles nearly blew a 31-10 third-quarter lead, but Antone Smith's fourth rushing TD of the game with 3:57 to play clinched the win.
 
Biggest Upset: Virginia 31, Maryland 0
It may not look like a huge upset now, but entering this game, Maryland was 4-1 and had notched wins over two ranked teams (Cal and Clemson). Virginia, on the other hand, was 1-3 and coming off losses to UConn and Duke (where the Cavs were outscored 76-13). Everything clicked for the Cavs in this one and the game sparked a run of unpredictable results in the ACC.
 
Best Remaining Game: Virginia Tech at Miami, Thursday
The ACC Coastal race will be clearer (though not all together clear) after these traditional powers square off in a Thursday-night affair. Thursday nights have belonged to the home teams this season.
 
Big East

Best Game: Cincinnati 26, West Virginia 23
Maybe this wasn't the best 'whole' game, but it certainly had the best finish. West Virginia scored 13 points in the final 1:15 on a safety, touchdown and two-point conversion and a 52-yard field goal to force overtime. Cincinnati regrouped and won the battle of league contenders on a Tony Pike two-yard touchdown pass.
 
Biggest Upset: Rutgers 54, Pittsburgh 34
Rutgers entered the game averaging 13 points per game vs. FBS competition and sporting a 2-5 record, including 0-3 on the road. Pittsburgh had righted its ship after a stunning opening loss to Bowling Green and had won five straight, including at No. 10 South Florida. Rutgers QB Mike Teel had five TD passes in the first half, two more than he had in the previous seven games combined.
 
Best Game Remaining: West Virginia at Pitt, Nov. 28
The victor should win the league and a BCS berth. Plus, there's a revenge factor at work here, as Pitt spoiled West Virginia's chance to play for the national title last year.
 
Big Ten

Best Game: Purdue 48, Michigan 42
Yes, it was between two bottom-feeders, but this 13-touchdown affair was a classic. Purdue snapped a 42-42 tie with 26 seconds left by stealing a page from the Boise State playbook and perfectly executing a hook-and-ladder to end Michigan's consecutive non-losing seasons streak at 40.
 
Biggest Upset: Iowa 24, Penn State 23
The Lions were 9-0 and hoping for a shot at the national title, while Iowa was 5-4 with losses to
Northwestern and Illinois. Iowa rocked the BCS picture with a last-second field goal from its backup kicker to spoil the Lions' perfect season.
 
Best Game Remaining: Michigan State at Penn State, Nov. 22
Penn State can earn a Rose Bowl bid with wins against Indiana and Michigan State. The Spartans are alive as well, but they would need Ohio State to lose to Illinois or Michigan in order to bite those rose stems after beating Penn State.
 
Big 12

Best Game: Texas Tech 39, Texas 33
Was there any doubt? Michael Crabtree's touchdown catch with one second remaining became this season's defining moment. That play KO'd No. 1, helped put Texas Tech in position to
play for the national championship and vaulted Graham Harrell to the top of the Heisman lists. That's what you call a big play.
 
Biggest Upset: Oklahoma State 28, Missouri 23
Looking at it now, this result is not a surprise, but Missouri entered the game No. 3 in the nation
and Chase Daniel was Mr. Heisman. OSU supposedly had no defense, but three second-half interceptions secured the road upset.
 
Best Game Remaining: Texas Tech at Oklahoma, Nov. 22
This will be the fifth Big 12 South game between top 10 teams and could obviously shake up the national-title picture (again).
 
Mountain West

Best Game: Utah 13, TCU 10
Utah picked a good time to notch its first touchdown, scoring in the game's final minute to overtake a TCU squad that held quarterback Brian Johnson in check in front of a hostile crowd. Utah's fourth-and-five conversion on the final drive, plus two missed TCU field goals in the fourth quarter, made the difference.
 
Biggest Upset: TCU 32, BYU 7
The final score was more surprising than the fact that TCU won. TCU totally dominated BYU, which entered the game undefeated, ranked No. 9 and toting a 16-game winning streak. BYU QB Max Hall had no chance all night, as he got sacked seven times and turned the ball over four times.
 
Best Remaining Game: BYU at Utah, Nov. 22
If BYU wins, there will likely be a three-way tie atop the Mountain West between BYU, Utah and TCU, which would be unfortunate for the conference because it would lose its BCS bid. The last three games in this rivalry have been decided in the final minute or in overtime.

Pac-10

Best Game: Stanford 24, Arizona 23
The Cardinal inserted its third-string quarterback for the final drive, and Alex Loukas drove his team to the winning touchdown with 25 seconds left. Loukas led a 12-play drive that stunned an Arizona squad looking for a key road win.
 
Biggest Upset: Oregon State 27, USC 21
This one still makes no sense. USC's defense has allowed an average of 4.1 points per game in its eight other games this season, yet it could not stop an Oregon State offense that ranks 25th in the nation. The Beavers used some Thursday night magic to lock up the biggest upset of the season to date.
 
Best Remaining Game: Oregon at Oregon State
The Beavers could be playing for the Pac-10 title and a Rose Bowl berth if they can beat Cal and
Arizona between now and then. Bring your raincoats.
 
SEC

Best Game: Alabama 27, LSU 21 (OT)
The atmosphere was electric and the game did not disappoint. Nick Saban went into his old stadium and came away with his No. 1 ranking and perfect record intact, but it took overtime to do it. LSU blocked a short field goal on the last play of regulation to force overtime.
 
Biggest Upset: Ole Miss 31, Florida 30
This one is on par with USC-Oregon State. Ole Miss blocked an extra point with less than four minutes left, then managed to stuff Tim Tebow on fourth-and-one in the final minute with the Gators approaching field goal range. Florida has outscored its opponents 243-57 since.
 
Best Game Remaining: Alabama vs. Florida, SEC Championship
Both teams clinched a spot this weekend, setting up a potential elimination game in the race for the national championship. The winner will try to give the SEC a third-straight national champ and the loser will head to the Sugar Bowl.