Are you a fan of The Beyond? http://en.wikipedia.org/wiki/The_Beyond_(band) Whenever 'intelligent' is used as a prefix in music, it's usually shorthand for 'wanky bollocks' - but The Beyond, both musically and lyrically, were clearly a genuinely intelligent band. Second album Chasm is particularly superb.
I've got one of their albums and saw them live once BITD. Thought they were good if I remember rightly.