Having said all that he's my hero otherwise, as evidenced by this quote from Oliver Stone on their first encounter:
“The first meeting was a disaster. [Farrell] was a skinny little Dublin boy, drunk as a skunk — breaking glasses in the restaurant, with his hand on my thigh the whole time. I couldn’t stand him."
I can't wait until I have the balls to show up to major job interviews completely smashed, break shit, and grope my interviewer. And STILL get the job. Rock on, Colin. Just don't make any more movies.