I have some Pandora experiences here too. Selected '
Die Krupps', and found a lot of music that made me go "Meh.", but found few pretty good ones too.

At least
Imperative Reaction, who I've got to listen quite a bit recently. They're kind of rock/metal (without any guitars though), I think 'indrustrial' might be close. Songs
Redemption,
Arrogance and
Malady should be a good starting point. =)
Second,
The Fair Sex, who I've listened to a bit less, but still have acquired some of it..
Mother Restless or
Run and Hide should give you a good enough image. Same idea as with Imperative, just slightly different approach.
And as far 'trippy' goes,
Ozric Tentacles are definately my cup of tea! Songs
Sunhair and
Waterfall City are the ones that got me into tentacles.

And of course, Die Krupps itself is worth a check.
Fatherland and
To the Hilt are my picks from them. Also, Rammstein fans might find some familiarities in
The Dawning of Doom. >)