She is best known for her roles as PERSON@1 on the ORGANIZATION@1 sitcom How I Met Your Mother , PERSON@2 on the television series Buffy the Vampire Slayer , and PERSON@3 in three MISC@1 films .

She started getting noticed with her roles in Buffy the Vampire Slayer as PERSON@2 and in the MISC@1 movies as PERSON@3 .
