Actually, I was taught the term "Dramatic Irony," and I think it suits the situation better. It doesn't always have to be tragic or angsty or suspenseful or otherwise negative (I personally don't have much use for catharsis). It can be funny, too, and probably other things.
Like many such things, it's a technique. A tool. It can be used for a lot of different purposes, and whether or not I like it depends on whether or not I think it's the right tool for the job and whether or not I think the one wielding the tool is doing a good job of it.
Paul
