Theme SOngs and Musicals

I seriously think I should log how many times a day the Hawaii 5-0 theme song trolls around in my head. It really is freakish how many times daily I catch myself just humming along to that stupid theme song. I think I should just go see House at this point because this can't be normal of course that may not be the right kind of doctor now that I think about it. It really doesn't make much sense to me since it wasn't one of my favorite shows ever. I liked it and all but come on, not to this point. Of course, I am always humming some song from a musical as well. Things from The Phantom of the Opera, The Sound of Music, My Fair Lady and so forth. These crazy things that float through my head...