I just wanted to post this recipe sent to me by one of our CSA members, Nancy Swartz.  I had actually just been wondering this morning about another way to prepare radishes besides eating them raw in a salad...I plan on trying this out in the next few days.
 
Grilled Radishes - compliments of "All Recipes.com" - quite delicious, actually!

Prep Time: 15 Minutes
Cook Time: 20 Minutes
Ready In: 35 Minutes
Servings: 6

"Sliced radishes are grilled in a foil packet with garlic and butter. It's a terrific, simple side dish!"
Ingredients:
20 ounces radishes, sliced
2 cloves garlic, minced
2 tablespoons butter, cut into small pieces
1 cube ice
salt and pepper to taste

Directions:
1. Preheat the grill for high heat.
2. Place the radishes, garlic, butter, and ice cube on a double layer of aluminum foil large enough to wrap contents. Season with salt and pepper. Tightly seal foil around contents.
3. Place foil packet on the grill, and cook 20 minutes, or until radishes are tender.