TV
11/09/2012 04:30 pm ET

Seth Green On 'How I Met Your Mother': 'Buffy' Reunion With Alyson Hannigan (PHOTO)

Part of the "Buffy the Vampire Slayer" Scooby Gang is back together! Seth Green is filming his guest stint on "How I Met Your Mother" and reunited with his former co-star Alyson Hannigan on the set Friday.

The two sent tweets about their reunion excitement and tweeted photos with each other.

"How I Met Your Mother" airs Mondays at 8 p.m. ET on CBS.

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