Funnily enough, I was playing Brute Force and Ignorance earlier! I love the intro... good luck with the instrumental though - I saw it a few times and that's the one that I still find jaw-dropping, I've no idea how to do it... (I can noodle about on the slide stuff, but it's the "mandolin" type chord bit that stuns me..)
I also seem to be playing his "I Fall Apart" quite a lot, because this new strat just sounds like that - the IT'd strat, er, doesn't! :lol:
But I've also been trying out early ZZ Top stuff to see which ones I think are strat tunes (ie he played them on a strat) - I suspect Nasty Dogs is, it seems to sound more "authentic" on a strat than on a Les Paul...