Good German brands:
Paulaner
Spaten "Optimator"
Franziskaner
Erdinger
Weihenstephaner (World's oldest brewery, btw)
Schneider WeisseAnd my personal favorite of late:
Pinkus Organic (Actually, Pinkus is so damn good, at times I can feel the craving in my bones.. LOL)
Pretty much all of these can be found somewhat easily, except for Schneider-Weisse... which unfortunately has been absent here in Reno for a while.