Yes, Sir Psycho Sexy.
I myself used to be a big fan and I've seen them several times in concert.
I pretty much quite listening to them once they became more so mainstream at about the time of Californication. I agree a lot of stuff after that just isn't rockin' like the old stuff. Actually a lot of the newer stuff can about put me to sleep.
Blood Sugar Sex Magic is by far my favorite album of theirs.
Mothers Milk ain't bad either.
Always loved the song Blue Heaven off of their first album.