Alyson Hannigan met Alexis Denisof in season three of Buffy when he played Watcher Wesley Wyndham-Pryce. The two became good friends and eventually started dating. They married in 2003.

Alexis Denisof played the Watcher Wesley Wyndham-Pryce. He later went on to play a much stubblier version of Wesley in the spin-off Angel. Alexis married Alyson Hannigan, who played Willow, …

Alyson Hannigan played the computer nerd turned witch Willow Rosenberg in Buffy the Vampire Slayer. Her birth name was Allison Lee Hannigan. She was a child star, and appeared in …

In the episode 5.16 The Body, Xander punches his hand through the wall after Joyce’s death. Joss Whedon mentions in his DVD commentary for the episode that Alyson Hannigan was allergic …

Alyson Hannigan told Entertainment Weekly which her favourite Buffy episodes were in an interview in October 2005:

4.10 Hush: “It was a whole new way of figuring out how to act, …

Anthony Stewart Head was listed as a guest star in the credits from 6.01 Bargaining (Part One). Alyson Hannigan’s credit from that episode was changed to “Alyson Hannigan as Willow”.

Alyson Hannigan claimed that she filmed a much stronger version of the scene in 1.12 Prophecy Girl where Willow and Cordelia discovered the bodies the students:

“We did the tame version …

A few actors/actresses that appeared in Buffy or Angel have also appeared alongside Alyson Hannigan in her new show How I Met Your Mother. They are:

Alexis Denisof who appeared …

When interviewed by the BBC, Drew Greenberg, who wrote the episode 6.09 Smashed, mentioned that Alyson Hannigan had difficulty with doing the Italian spell in that episode:

“The only issue …

Seth Green said in an Ultimate TV chat that the line, “I mock you with my monkey pants” in 2.10 What’s My Line? (Part Two) was an idea of Alyson Hannigan’s. …

The Buffy the Vampire Slayer theme tune was written and performed by the band Nerf Herder. The band took their name from a line in The Empire Strikes Back where …

We see in 1.10 Nightmares that Willow has a Nerf Herder bumper sticker on her locker door. Nerf Herder wrote and performed the Buffy theme tune. Alyson Hannigan is a big …

According to the DVD commentary for Angel’s 5.08 Destiny, Alexis Denisof (Wesley) did not appear in the episode because he was getting married to Alyson Hannigan.

Alyson Hannigan hated her singing voice and asked not to have a song, or any major singing lines, of her own in the musical episode 6.07 Once More, With Feeling. In …

At the end of 1.09 The Puppet Show, Xander, Buffy and Willow nervously performed a piece from the Greek tragedy Oedipus Rex, written by the Greek playwright Sophocles (496-406 B.C.). Xander …

In 2.20 Go Fish, Willow says Oreo cookies have “chocolately-goodness”. This may be an in-joke as Alyson Hannigan once did a commercial for Oreo.

Emma Caulfield told a group of Buffy fans at the Starfury Fusion Event (Blackpool, England, 2004) about practical jokes on set:

“If there was a practical joke to be played …

At the Collectermania May 2007 Q and A , James Marsters talked about the casts’ feelings on singing in 6.07 Once More, With Feeling:

“Frankly my respect for the cast …

At some point between the episodes 4.20 The Yoko Factor and 4.21 Primeval, Cordelia rang Willow up for help cracking into a computer of her own to find files coded by Wolfram …

As with most TV shows, a pilot episode was made for Buffy the Vampire Slayer, which was never aired on TV. The pilot was very similar to the story seen …