Penn State football coach Bill O'Brien talks to correspondent Andrea Kremer about how challenges close to home prepared him to deal with the turbulence in the program -- following the revelations involving Jerry Sandusky -- on Tuesday's "Real Sports with Bryant Gumbel" (10 p.m., HBO).

PBS' lively "Constitution USA with Peter Sagal" (9 p.m., WHYY 12)  -- or as I call it, history on a Harley -- looks at the 14th Amendment and what it means to causes as diverse as same-sex marriage and immigration reform.

And in the season finale of "Grimm" (10 p.m., NBC10), Nick (David Giuntoli) looks into a series of attacks linked to Portland's "undead" (why do we never see these people on "Portlandia"?). Shohreh Aghdashloo and James Frain guest-star.

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