Toast coriander seeds over medium-low heat in a skillet for 3-5 minutes, stirring constantly (careful not to burn, as they burn easily). Using a mortar and pestle (or something similar) grind coriander seeds. In a small bowl combine honey, soy sauce, lemon juice, and ground coriander.
Brush fillets with sauce; place each in tin foil. Place on grill for about 7 minutes on each side, or until inside is opaque.
Meanwhile, bring remaining sauce to a boil in a small sauce pan; cook until thickened, about 1 minute. Serve fillets with sauce on side.
I love coriander!
In fact, if anyone plays the free MMORPG Vindictus, my main character (I play on the East server~) is an Evie (mage/scythe-type) named Koriandr. The name comes from both the spice and my favorite Teen Titan real name, Starfire~