Entirely disagree. Will Ferrell is one of the unfunniest people working in the entertainment today. The only program I've enjoyed him in was STRANGER THAN FICTION and ELF, which I thought were works of genius and inspiration b/c he wasn't forcibly funny, he was genuine, and that worked in both cases.
When he's held in check, Will Ferrell can be hilarious. Unfortunately, a lot of directors feel the need to unleash him on a film, and his schtick gets old really quick.