swilow
Bluelight Crew
I don't know - there are some pretty interesting artists around nowadays.
Bowie was pretty revolutionary because he used rock'n'roll to challenge a lot of social norms, gender roles and such.
It would be impossible to make that kind of impact in the current musical/social/global media climate nowadays.
Music has lost the power to shock - but not the power to move or inspire us.
Bowie was amazing, and part of his brilliance was being one step ahead of the zeitgeist, and using it to his advantage (with great skill).
That's it. Much of the transgressive nature of rock has been subsumed by the dollar, but there are definitely challenging and innovative artists around. I don't feel like there is many in popular music though. Trangression is such a gimmick anyhow. There are some intriguing metal bands around who are genuinely weird, but even they aren't that odd.
I admire the martial/industrial band Laibach, simply for their dedication to weirdness and aesthetic (plus there music is occaisionally great). Of course, they emerged slightly post-Bowie and were influenced by him.