Exclusive Video: How I Met Your Mother Stages a Most Frightening Buffy Reunion!
Willow and Oz fans, prepare to squee -- with fear!
Former Buffy the Vampire Slayer sweethearts Alyson Hannigan and Seth Green reunite in Monday's hour-long How I Met Your Mother (CBS, 8/7c) when Green guest stars as a (super creepy) college acquaintance of Lily and Marshall.
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I have been waiting for this episode!!! And now it is finally here! Tonight Seth Green will join the cast of How I Met Your Mother :)
See the sneak peek in the article below:
