12:13pm PT by Mikey O'Connell
'How I Met Your Mother' Plots 'Buffy' Reunion With Seth Green
Buffy the Vampire Slayer fans, prepare to geek out. A key couple from the long dead WB drama is reuniting in primetime.
How I Met Your Mother announced Friday afternoon, via its official Twitter account, that actor Seth Green is set to guest alongside Mother star and former Buffy cast mate Alyson Hannigan.
Green's role, naturally, puts him in the company of Hannigan's Lily. He'll play Daryl LaCoutre, a college classmate who looked at Lily and Marshall (Jason Segel) as his best friends -- though they barely remember who he is. They find him 12 years later, still living by the Wesleyan campus, obsessing over a reunion with the married duo.
Hannigan and Green previously played on-screen couple Willow and Oz for roughly three seasons of Buffy the Vampire Slayer -- until Green's character departed the show and Alyson's became a lesbian.
This is not the first time How I Met Your Mother has reunited former Buffy co-stars. Alexis Denisof, who played Wesley Wyndam-Pryce on Buffy and spin-off Angel and is Hannigan's real-life husband, has appeared as daft anchorman Sandy Rivers in eight episodes of the series.
Green's Robot Chicken was recently renewed for a seventh season by Adult Swim. He is repped by UTA and Koopman Management. His episode of How I Met Your Mother is tentatively scheduled to air Dec. 10.