Isn't it grand when something good for you tastes good too. V8 was the health drink before health drinks and still reigns supreme. Full of vitamins, calcium, and potassium it's unique combo of tomatoes, carrots, beets, celery, parsley, lettuce, watercress, and spinach.
Nothing beats it for an early morning when you were up late the night before. The Spicy Hot is excellent if you like spice, and the Lemon Twist is tastely, but sadly very hard to find.