The `Taken` actor - who has two sons with his late wife Natasha Richardson - has left his partying days in Hollywood behind him and now prefers to spend his spare time on the water, but admits he hasn`t had many opportunities to indulge in his hobby lately.
He said: "There`s a lot of nonsense in Hollywood. I`ve been a part of that years ago and gotten the t-shirt. I was even president of the club at one stage.
"I love doing the work but then when I`m not working I love my other life which is being with my kids and fly fishing as much as I can.
"I haven`t been out since the end of August when I took my kids to Wyoming and we caught a few trout."
Liam is such a fan of fly fishing that he has even taken part in a programme about his hobby.
He explained: "In America there`s a programme called `Fly Fishing the World` and I`ve done about five of them. The last one I did was in New Zealand for about ten days and I brought my best friend. We had two cameras up our noses the entire time but they`re great fun."