Interesting. I get the likeness thing, but surely one could publish jokes about anyone they wish and that would be satire or fair use or something?

Facts and copyright is an interesting one, because I'm surprised a fact can be copyrighted, unless it's the wording specifically.

For better or worse, in the US you can pretty much sue anyone for anything. A court certainly requires more evidence to declare liability than Apple would to remove an app.

As far as copywriting facts, are you really under the impression that Chuck Norris is the only man who can factually slam a revolving door? :)