James, who played Gunther in the long running sitcom, has returned to his roots for a special preview with some lucky fans on London's Brick Lane.
But what is FriendsFest all about?
FriendsFest is an interactive week-long fan experience, which officially launches on Wednesday (16 September), featuring a full scale set of Monica's apartment, an exhibition of original props and a Central Perk-inspired café. You probably heard lots about it last month, as tickets went on sale for £5, but the first batch was sold out in a record 13 minutes! A second batch was soon released, which sold out in 11 minutes!
We can imagine there were a lot of disappointed fans, but it proves that some 21 years after the first episode, Friends is still as popular as ever.
Sporting a newly-dyed blonde hair, James visited the set on Monday afternoon (15 September), where he posed for photos inside Monica's apartment with those iconic purple walls. The apartment also features the kitchen and the rear window where the group would spy on the 'Ugly Naked Guy'!
"It's amazing to think that Friends is still as popular today, as it was 21 years ago when we first started," said James. "Comedy Central's FriendsFest brings together some of the most iconic sets and props from the show and I'm certain fans will love.
"I feel extremely nostalgic being back in Monica's apartment and Central Perk."
We're sure James loved hanging out at the Cenrtral Perk-inspired cafe. His character Gunther was the manager of the Central Perk coffee house, so that iconic orange sofa was no doubt familiar ground.
There are lots of stuff for visitors to do too. For all the girls out there, they can emulate Rachel Green's hairstyles with a complimentary blow dry in Rachel's Hair Salon in association with Soho Salons. Visitors can also play foosball and relax on lazy boy chairs like Joey and Chandler.
Fans can watch episodes of hit sitcom Friends in chronological order, weekdays from 5pm on Comedy Central.
Try Reveal's digital edition on iPhone & iPad. Subscribe now & never miss an issue!