While much of the East Coast continues whipping itself into a frenzy over the incoming "Frankenstorm," we've just received confirmation that everything is going to be alright with the world. For you see, Willow and Oz are getting back together! For non-Whedon nerds, that is to say that Seth Green will guest star on the current (and potentially final) season of 'How I Met Your Mother,' alongside his former 'Buffy the Vampire Slayer' co-star Alyson Hannigan. But, who will the one-time werewolf portray?

While a large portion of the 'Buffy' fanbase would undoubtedly have preferred Amber Benson, 'How I Met Your Mother' season 8 will stage something of a 'Buffy' reunion in an upcoming episode as Alyson Hannigan's former Whedon-verse co-star and 'Robot Chicken' creator Seth Green will drop by the series. The 'HIMYM' Twitter first announced the news, adding that Green will play "a creep guy named Daryl," while The Hollywood Reporter identified the character as Daryl LaCoutre, a former Wesleyan classmate of Marshall and Lily's.

Moreso, Green's Daryl viewed the couple as his best friends, though 12 years later they have little memory of the man, and find themselves unnerved that he continues to live by the campus obsessing over a reunion with them. Green isn't the first former 'Buffy' star to appear in the series either, as Whedon alum Alexis Denisof (as well as Hannigan's husband and baby daddy) has appeared on the series a number of times as reporter Sandy Duncan.

As for 'Buffy,' fans of the series well remember that Green played Willow Rosenberg (Hannigan)'s boyfriend Oz, who left to control his werewolf impulses and later returned to find Willow had begun dating Tara (Amber Benson). Green and Hannigan portrayed an on-screen couple once before, as teens in 1988's 'My Stepmother Is An Alien.'

It isn't known exactly when Green will appear, but 'How I Met Your Mother' season 8 continues on Monday nights. Tell us what you think of Green's casting and a 'Buffy' reunion in the comments!

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