While many people were introduced to her as the notorious "this one time, at band camp" girl in American Pie, she's mostly known for being one of the main cast in two highly popular , Buffy The Vampire Slayer and How I Met Your Mother.
Some fans reacted quite strongly to Winona Ryder , first to a young Spock in the 2009 Star Trek reboot and again when she played the frantic mother in 2016's Stranger Things.
Well, this one time, at Hollywood camp.
Denisof had a recurring guest role on Buffy, which is where , before achieving regular status on its spinoff series, Angel.
Her first film was in 1988, a science fiction comedy.
Nothing against any of her best-known characters, but it sounds like Hannigan may have found the role of a lifetime.