Constitutional Law however to put it bluntly though is boring....
I'm currently doing one 'law' course here(it's called International Relations but isn't anything like the IR I've done in Durham before and it's in the Law faculty) and compared to my other more social science orientated ones I hate it. The lecturer is so sarcastic towards us Erasmus students, but sarcastic in a bad way and sometimes I feel he's just plain nasty.
I agree with Ali though that a social sciences subject is likely to open doors to jobs, as well as something like languages. But scientists shouldn't worry anyway because they'll all earn far more than all us combined in the end!