As if being sent around the world three times already by Ricky Gervais in An Idiot Abroad wasn't enough, everyone's favourite 'round-headed buffoon' is set to do it all again, but this time on his own journey of self-discovery.

Karl Pilkington has turned 40, hes now officially 'middle-aged' and he's ready to re-assess his life and look at things a little differently (about time, right?).

In The Moaning of Life, the now very well travelled Karl experiences how other cultures face up to some of life's biggest issues, while at the same time planning for his own future.

"I've been on the planet for 40 years now, and I'm still none the wiser as to what it's all about really", Karl said. "I've never worried about life's big questions. People at my age sit about pondering about 'why are we here?' The only time I ever asked meself that is when Suzanne booked us a surprise holiday to Lanzarote."

Discover More

: : Relive Karl's most quotable quotes from the series

: : Take a look at the Moaning Of Life picture gallery

: : See highlights and unseen clips from Episode 1: MarriageEpisode 2: HappinessEpisode 3: KidsEpisode 4: Vocation and Money, and Episode 5: Death

: : Read Karl's top 10 pearls of wisdom from our Karl Pilkington Q&A

: : Watch it whenever you like and buy the series DVD