Last night we were flipping through TV channels, and we came across My Stepmother Is An Alien, which I’ve never seen before and which I probably could have continued living quite serenely without, but for one interesting little fact.

“Hold on,” I said before my husband could change the channel. “That’s Alyson Hannigan.”

“Willow?” he said. “No, it’s not.”

“Sure it is,” I said. “Listen to her. Look at her eyes and her chin.”

“Good gods, it is Alyson Hannigan,” he said.

And a moment later, we had another shock.

“That’s Seth Green playing her first date,” my husband said in disbelief.

“No, it’s not – yes, it is,” I said. “This is unreal. They’re so young!”

“I wonder what it was like on the Buffy set when they said, Hey Alyson, this is Seth, he’s going to play Oz, your first boyfriend,” he chortled.

Completely random, or a casting director with a sense of humour? You decide.