These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Is there some kind of curse in Hollywood surrounding him? There's a number of comedy movies over the years where the production staff wanted a different actor for a specific role, but hired him instead. Some examples include:
When the Bewitched remake was in production, Jim Carrey was being groomed for the Darrin Stephens-esque part (for a resemblance to Dick York), however, because he was unavailable to accept the role, it went to Ferrell instead.
Similar case with the remake of Land of the Lost - Sid & Marty Krofft wanted Carrey for the role of Ranger Rick Marshall, however, he, once again, was unavailable at the time of production, so the Kroffts settled on Ferrell instead.
Deja vu with Elf; again, Carrey was among different actors who the producers wanted to play the title character of Buddy the Elf, and again, he was unavailable. In a mock-casting call to poke fun at the troubles finding another actor, one person attending the audition, who was fed up with the script supervisor's nitpicking, storms out with, "Why don't you get somebody like Will Ferrell to do this?!"