How is á unicode? It's just high bit ascii isn't it? anyway, I beat you to the punch (and probably others) as I've used high ascii in an obfu. I'm quite fond of ¡, ¤, and especially °;

 
___crazyinsomniac_______________________________________
Disclaimer: Don't blame. It came from inside the void
perl -e "$q=$_;map({chr unpack qq;H*;,$_}split(q;;,q*H*));print;$q/$q;"