Tina Fey crushes Sarah Palin again

Fey's impersonation of Katie Couric interview is spot-on.

My bottomless cup of love for Tina Fey just got a warm-up.

On "Saturday Night Live" she tore up Sarah Palin again.

If you missed it, this really is must-see TV.

Thomas F. Schaller is professor of political science at the University of Maryland, Baltimore County and the author of "Whistling Past Dixie: How Democrats Can Win Without the South." Follow him @schaller67.

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