Bring 4 cups water to boil; add wheat berries. Reduce heat and cook, uncovered, for 1 hour or until tender and most of liquid is absorbed.
Drain; set aside.
Cook carrots and celery in 1 teaspoon oil in a large skillet over moderate heat for 3 minutes or until tender.
Add wheat berries and cranberries, and cook, stirring, for 5 minutes or until hot.
Transfer to serving bowl, and stir in next 4 ingredients (through pepper). Cover and keep warm.
Preheat oven to 45
Brush a baking sheet with 1 teaspoon olive oil; arrange salmon, skin side down.
Combine maple syrup and mustard; spread on top of salmon. Roast in middle of oven for 7 minutes. Turn broiler on; broil salmon for 34 minutes or until golden on top.
Transfer salmon to a cutting board, and cut half of it into 4 (6-ounce) pieces; reserve the rest.
Reserve 1 1/2 cups wheat berry mixture. Stir mche into the remaining wheat berry salad.