I don't get this thread? Dutch language music isn't a type of music. What you guys posted is what, soft rock and techno, where they just happen to speak that language. Though I can't think of any Dutch bands that I really like off of the top of my head, there is a pretty good street punk band called Antidote from out there and a great garage rock band called the Outsiders from there as well. And here's a fantastic video out of there of a garage rock band called the Zipps
http://youtube.com/watch?v=paLmrFlYMxU
Of course all of the bands I mentioned they sing in English most of the time, you can still hear that heavy accent.
And for those who don't know, the band Johnny posted are from the US, and according to my friend, have the absolute best videos to watch while tripping on acid

and Johnny have you seen some of their interviews? hilarrrrrrrious stuff they ramble on and make no sense.