Well, as German Fantasy is one of the best,I read or have read:
Markus Heitz: (definitely at least number two of all living fantasy writers!, after Hennen, of course!)
Shadowrun (all 6!)
Vampires
Dragons (both)
All 9 Ulldart!
All 4 Dwarven Books!
and also some more...
Bernard Hennen (which is my favorite writer after Tolkien, btw!):
Everything, as last, Elven Queen!
At this point, I must say that if you understand German, Bernard Hennen is definitely the best. He writes fluently, but the describsions are awesome. Really cool storyline. I can just recommend his books!
Wolfgang Hohlbein:
Many, like some of his Elves, a Dragon book and some others
Witzko:
His 2 Goblin Books.
Christoph Hardebusch:
Trolls,
Sturmwerlten
Stan Nocholls:
Orcs!
Just to list some of them, now I'm reading the 4th part of the Great Dragon serie by Julia Conrad (read all the other parts before), which is, her best book at last.
I think since I really started to read fantasy (about a year and a half ago), I read about 150 books! I know nearly every author, and if your favorite one isn't listed here, I can name some others: Rowling (7 books), Cavanan (6), Licia Troisi (6), Alfred Bekker (6), Susanne Gerdom (3) and many, many, many others! I actually cansay that I'm an expert of German Fantasy!
EDIT: And of course all the Star Wars Books I didn't count into the 150 before, those are about 30.