Pretty Little Liars (8pm, ABC Family) - Aria, Emily and Spencer think Mona has regressed to her old bad behavior, but they have no proof, and Hanna has doubts about their claim.
Pioneers of Television (8pm, UNC-TV) - The Season 3 premiere spotlights female comedians, including stand-ups Phyllis Diller and Joan Rivers, and sitcom stars like Lucille Ball, Marla Gibbs, Mary Tyler Moore and Betty White. Also, Carol Burnett shares stories about her variety show, and there is commentary from Margaret Cho and Tina Fey.
Ben and Kate (8:30pm, Fox) - Tommy introduces his new girlfriend to the gang, and Kate tries to get to know her better. Meanwhile, Ben works on his Rail Mail business plan.
Go On (9pm, NBC) - Ryan decides to go on his first date, but snowboarder Shaun White (playing himself) ends up being his romantic rival.
Real Husbands of Hollywood (10pm, BET) - The lives of a group of Hollywood husbands are tracked in this semi-scripted reality show spoof starring Kevin Hart, JB Smoove, Robin Thicke and others. In tonight's premiere, Kevin kicks a fellow hubby out of a weekly poker game. Adrienne reviews.
Parenthood (10pm, NBC) - Victor's adoption deadline nears, prompting Julia and Joel to reconsider their family's future. Also, Mark tells Sarah and Hank that he intends to win Sarah back.
Justified (10pm, FX) - Raylan tangles with members of a dangerous family, and Boyd targets an unusual preacher.
Frontline: Inside Obama's Presidency (10pm, UNC-TV) - An examination of President Barack Obama's first term, including his battles with Republicans over health care reform and the economy, and his expansion of the targeted killings of enemies.
Second Generation Wayans (10:30pm, BET) - Nephews of the comedic Wayans brothers seek their own success in Hollywood in this new comedy series starring Damien Dante Wayans and Craig Wayans.