Big Brother

Big Brother 12
8/7c CBS
The Brigade (Matt, Lane, Enzo, Hayden) is back in power now that Matt is Head of Household and also possesses the Diamond Power of Veto, which guarantees his safety for the next two weeks and allows him to change the nominations if he so desires. As for tonight, the Brendon-Rachel alliance looks to be history as Day 41 is marked in the books. — Tim Holland

So You Think You Can Dance

8/7c Fox
With injuries, double-eliminations and All-Stars, this seventh go-round of SYTYCD has been a season like no other. And in what will no doubt be a memorable season finale, we'll find out if Kent, Lauren or Robert will be America's favorite dancer. But before the winner is crowned, stay tuned for performances by Black Gold, whose "Shine" has been featured as the weekly exit song; hip-hop dancers Quest Crew; U.K. SYTYCD winner Charlotte "Charlie" Bruce; and tap-dancing duo the Manzari Brothers. — Joe Friedrich

American Chopper: Senior vs. Junior
9/8c TLC
This may be branded a spin-off, but it will have all the family drama (and more) that you've come to expect from American Chopper and the still feuding Teutul clan. And if you thought things were bad between Paul Sr. and Paul Jr. before, just wait till tonight, when Jr. announces that he's opening up his own bike shop, becoming a direct competitor of his dad's. — Karen Andzejewicz

Boston Med
10/9c ABC
For the past two months, this series has told some remarkable stories, from lung transplants to pediatric surgery. But even before it began, most of the buzz has been about a face transplant, which we get to see in tonight's finale...and it's been well worth the wait. Just the second such procedure ever tried in the U.S., the operation itself is a medical marvel, but it wouldn't be the same if we didn't get to know the principals involved, especially a man whose sad death makes it all possible. — Joe Friedrich

Project Runway
9/8c Lifetime
As Season 8 continues its early string of episodes, the personalities of this year's designers are coming into clearer focus. Mixing throughout these quirky personas are the slyly manipulative ones; the motherly one (Peach); the quiet, sensitive and misunderstood one (Mondo); the skilled front-runner (two-time winner Gretchen); and, believe it or not, some really likable ones. The couture clashing progresses when the fashionistas create unconventional garb in an episode that comes with a talent-testing catch and an apparent health scare. — Dean Maurer

BBQ Pitmasters
10/9c TLC
The meaty series is back for a second helping, but with a new format. Rather than document different BBQ cook-offs across the country, TLC has created its own contest, which will put aspiring pitmasters through a series of challenges in their quest to make it to the grand finale. And the stakes (steaks?) are high. The winner will walk away with a whopping $100,000, one of the largest prizes awarded in competitive barbecue. — Karen Andzejewicz

PGA Championship
1/noon c TNT
The season's final major begins at Whistling Straits in Kohler, Wis., as Tiger Woods' downward spiral continues. In last week's WGC Bridgestone Invitational, he shot a career-worst plus-18, finishing 30 shots behind champ Hunter Mahan, seriously endangering his 269-week run as No. 1 in the world. In last year's PGA Championship at Hazeltine National in Chaska, Minn., Y.E. Yang handed Woods his first major loss after he'd led after three rounds. The Woods seem a lot less scary after Tiger had some car trouble on Thanksgiving last year. — Brendan Curley