Kitchen Nightmares (8pm, Fox) - Chef Ramsay helps the owners of a Cajun-style restaurant in Nashville, who had to relocate their eatery after Hurricane Katrina and have been unable to rebuild their customer base.
Happy Endings (8pm, ABC) - Back-to-back new episodes close out Season 3. In the first, Penny's mom (Megan Mullally, left) and Dave's dad (Michael McKean, left), who have been dating, visit and announce that they'd like to adopt a baby. In the second, Alex and Jane's older sister, the alpha female, is getting married and Jane is charged with planning the wedding. ABC has not yet announced whether "Happy Endings" will get a fourth season. (Please, ABC!)
30 Days in May (8pm, BET) - Boxer Floyd Mayweather's 2012 stint in jail for domestic battery in an incident involving his ex-girlfriend is chronicled.
Maron (10pm, IFC) - A new series based on the life of comedian and celebrated podcaster Marc Maron. In tonight's opener, an abusive tweeter torments Marc, so he decides to teach the internet troll a lesson. Dave Foley guest stars tonight (future guests include Denis Leary, Aubrey Plaza, Adam Scott, Jeff Garlin and others). This isn't a particularly strong debut -- Maron seems a little awkward and uncomfortable in the lead actor spot -- but that gets better in later episodes, so definitely check back next week. (In fact, next week's episode with Denis Leary is online right now if you want to check it out.)
Blue Bloods (10pm, CBS) - Danny blames himself when a young woman commits suicide because he had made a promise to her in the wake of her parents' death. Meanwhile, violence involving a gang at a housing project erupts and effects the Reagans.
Ke$ha (10pm, Logo) - Ke$ha meets an inspiring fan in Manchester, England, in the opener of this series following the life and career of the pop singer.