I like german music. Probably cause I semi understand it.

Silbermond, I'm in love with this band.
YouTube - SILBERMOND - KRIEGER DES LICHTS

Frauenarzt & Manny Marc, They are just silly. I love it.
YouTube - Frauenarzt & Manny Marc - Das Geht Ab (Official Video HQ)

Xavier Naidoo, This song is good, even if you don't know german. There is a bit of english though.
YouTube - Xavier Naidoo - Alles kann besser werden (Official Video)(HQ)