“Will & Grace” (9 p.m., NBC): A decade after their unforgettable eight-season run,

“Will & Grace” (9 p.m., NBC): A decade after their unforgettable eight-season run, comedy’s fabulous foursome – Debra Messing, Eric McCormack, Sean Hayes and Megan Mullally – reprise their roles in this 16-episode season. It begins with Will and Grace faltering when their political beliefs are put to the test.

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