Type in "preoccupation" in the Microsoft Word Thesaurus and the entries for synonyms are:
a bee in your bonnet
Also, most of my college apps are due in a week and I'm so not even close to being finished. (Sorry, I always talk about college. My journal pretty much parallels Doonesbury at the moment [which I've just started recently reading for that very reason]).
My crazy Jewish grandparents are here and already driving me crazy, but they (and my dad) got me an iPod nano!! It's sooo awesome!