Johnny Depp & Julia Roberts
Who the hell rates Russell Brand as an actor?
I do ... just a weak one, and principally due to his most recent roles.
As soon as he did movies, his status as an actor became fair game. It's also possible that some of his acting in UK-acting roles might have been good. Fortunately, you've both challenged and proven my point.
For reference, here's the first paragraph from his Wikipedia profile and a link to his acting efforts.
Russell Edward Brand (born 4 June 1975) is an English comedian, actor, radio and television presenter, singer, columnist, and author. In 2004, Brand achieved mainstream fame in the UK as the host of Big Brother's Big Mouth, a Big Brother spin-off. In 2007, he had his first major film role in St Trinian's. He became known in the United States in 2008, after his major role in Forgetting Sarah Marshall; the film led to a starring role in Get Him to the Greek in 2010. He also worked as a voice actor for animated films Despicable Me in 2010 and Hop in 2011. He starred in the 2011 remake of the 1981 Dudley Moore film Arthur.http://en.wikipedia.org/wiki/Russell_Brand#Acting