NCAA Basketball Tournament (2pm, CBS) - The regional final games from St. Louis and Houston. Full schedule here.
Life (8pm, Discovery) - Mammals are the focus of tonight's 8pm episode of this Oprah Winfrey-narrated series of nature documentaries. Special attention is paid to how mammals care for their young, so Cute Baby Animal Alert. The fish episode airs at 9pm.
Amazing Race (8pm, CBS) - All I know is Jordan and Jeff are gone, so this show makes me sad now.
Undercover Boss (8pm, CBS) - The CEO of Herschend Family Entertainment (think Dollywood) goes undercover tonight to see how his company really works.
Breaking Bad (10pm, AMC) - In the second episode of the season, Walt tries hard to reunite with his family, and Jesse, just out of rehab, makes a big purchase. Also, there's an anxiety-inducing sequence involving those scary Mexican killers. If you've got nails, bite 'em.
Kirstie Alley's Big Life (10pm, A&E) - I like this show a lot more than I expected to. In tonight's back-to-back episodes, Kirstie celebrates a birthday and then tempers flare when the ladies go to a spa. You can catch repeats of last week's two premiere episodes at 5pm today, or following these episodes at 11pm.
The Pacific (9pm, HBO) - The third installment has the 1st Marine Division arriving in Melbourne in January of 1943. Basilone receives The Medal of Honor but is reluctant to embark on his next assignment of selling war bonds back in the U.S.