8. Alyson Hannigan, How I Met Your Mother
They sure milked several episodes' worth of sitcom fun out of Lily's impending nuptials to Marshall. Who could hold a straight face during the montage of freak outs over minor planning decisions, or the booze-addled rage in the hotel suite? In real life, Hannigan married her Buffy and Angel costar, Alexis Denisof.
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