Matthew Perry and Lisa Kudrow wish 'Friends' had never ended.

The pair starred in the long running sitcom with Jennifer Aniston, Courteney Cox, David Schwimmer and Matt Le Blanc until it went off the air in 2004 but admitted if they could go back in time and do a few more seasons, they would.

Speaking on CNN's 'Piers Morgan Tonight', Matthew said: ''I find myself sort of reminiscing about about how much fun the show was, and the hours that we worked. You know, you can see how much we laughed and everything. I was asked about it recently and I found myself saying, 'If I had a time machine, I would like to go back to 2004 and not have stopped.'

'''Friends' was the greatest job in the world.''

Lisa added: ''It was. We had a lot of fun. If it were up to us, like individually, oh, I would keep going. There would have come a time anyway when someone would have said, 'We've had enough.' But why not have fun until they do?''

While she misses her time on the sitcom, Lisa, 49, admitted she sometimes cringes when watching old episodes.

She explained: ''It's hard. If I see that it's on, I have to check my mood. If I'm in a bad mood, I'm not going to like seeing myself at all. If I'm in a good mood, I'm like, 'Oh, not bad.' But I think all of you guys are hilarious, every time. Like, 'God, they're talented. My God, they're so funny. Why did I suck so much?' ''