'I watched a film called The Bush Doctrine; it wasn't about politics'

Tina Fey must quite like doing her Sarah Palin impression. The 30 Rock star returned to Saturday Night Live for a second outing as the governor of Alaska, this time sending up Palin's marginally-less-than-authoritative performance in an interview with US news royalty Katie Couric.

Not perhaps as funny as the last skit, but Fey really does have that voice nailed.

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