David Schwimmer has revealed it was "a blast" being reunited with his Friends co-star Lisa Kudrow on her new show.
The pair - who last starred alongside each other as Ross and Phoebe in 2004 - recently filmed scenes for Lisa's comedy series Web Therapy and David told Access Hollywood it felt like no time had passed.
"We just riffed and it was a blast! It was really good," he said.
"It was just great that it wasn't work. There was no kind of learning... we just fell right into it and it felt very natural."
David said he was delighted when Lisa offered him the guest spot on the award-winning series, saying it was "some of the most fun I've ever had".
The 45-year-old isn't the first Friend to appear in the show about therapist Fiona (Lisa), as Courteney Cox shot a guest role last year.
Web Therapy started life as an improvised online series but is now also aired on television.