I toyed with the idea of applying in uni when they first started advertising openly. I quite like (nay, am thrilled by) the idea of sifting through tons of data to find nuggets of gold and unexpected links. It's what I like doing best (sad but true) plus you'd be doing something (hopefully) worthwhile.
It being in London and the crap pay put me off, but if anyone's reading mumsnet in gchq and you fancy an expat sleeper operative in that well known trouble spot that is sweden, I'm open to a tap on the shoulder...