After an amicable split with Caroline, he met his wife Alyson Hannigan while on the set of Buffy where she played Willow Rosenberg. They married in 2003.
Alexis' friends say that this very private man has a great ear for picking up accents and he smiles when I ask him to do his best Liverpudlian.
"I am really impressed with the variation in Scouse from the high-pitched to the deep and softer ones." He says he was delighted when he got the call from Gemma Bodinez at the Playhouse, who he worked with in the past. "I jumped at the chance."
"Although set in 1947, All My Sons is timeless," he says. "It is as human now as when Miller wrote it. I think it is relevant to today with wars going on all over the world."
The self-effacing actor, now 40, is probably best known for the cult show Buffy as Wesley Wyndham-Price, a character brought in to replace smoothie Anthony Stewart Head as Rupert Giles.
"It was like all my Christmases at once," he laughs.