I'm not sure what it is Jeri but apart from there being so many of them, they have no words to give you a clue as to what the title may be. Another factor is that you don't necessirally learn them for a source that knows the words or get the chance to ask for the name. Sometimes as with Colraine for me, I haven't even got a clue where I learned it...Seing Pipe on the Hob and Cliffs of Moher have been mentioned, I like playing them as a set. As for Banish Misfortune, I have a feeling I nominated it as my least favourite tune in a recent thread. Like Jeri, I learned it early on but did tire of it.
Jon