"Hands down, 'Withnail and I.' It's the perfect movie.

"It's my kind of movie, which is brilliantly funny on a very profound level and has a lot of drama and a lot of heart to it as well. There's not a wasted word in that film."

Will Arnett can currently be seen on TV's "Running Wilde."

More Favorite Movies: Ryan Kwanten | Kristen Chenoweth |  Anna Kendrick