One Tree Hill (8pm, CW) - The eighth season opens with Clay and Quinn both facing life-threatening injuries after being shot by Katie. Meanwhile, Nathan prepares for training camp in the wake of Haley's pregnancy news, and Brooke and Julian return from Utah engaged.
Life Unexpected (9pm, CW) - In the Season 2 premiere, Cate and Ryan (left) are greeted with changes at work upon their return from their honeymoon. Also, Baze gets cozy with a new bartender and Lux meets a guy who's new in town.
America's Got Talent (9pm, NBC) - The four remaining acts perform in Hollywood for the final time.
Covert Affairs (9pm, USA) - There are two back-to-back new episodes tonight. In the first, Annie poses as a potential recruit for smugglers in London, and in the second episode, which is the Season 1 finale, Annie and Ben work together to rescue an asset in Sri Lanka.
Parenthood (10pm, NBC) - In the second season opener, Adam is stressed out by his family and his demanding boss, who is played by William Baldwin (Baldwin is rumored to be a love interest of Lauren Graham's character this season). Also, Zeek and Joel try to fix a leak in the barn, Crosby gets ready to see Jasmine and Jabbar, and Haddie learns to drive.
Fashion's Night Out 2010 (10pm, CBS) - Neil Patrick Harris hosts a showcase of world fashion, featuring Anna Wintour, Diane von Furstenberg, Tommy Hilfiger, Oscar de la Renta, Tory Burch, and Justin Timberlake.
Sextuplets Take New York (10pm, TLC) - A new eight-part series about the Carpios, a family of Latino sextuplets (plus a 9-year-old) living in a small house in Queens, New York.
Also tonight, season finales for "Minute to Win it" (8pm, NBC) and "Wipeout" (8pm & 9pm, ABC).