Related Clues:

• At the top of the heap
• Perfection
• "__ in Show"
• Quintessential
• Blue ribbon-worthy
• Ten, so to speak
• "Father Knows ___"
• Worth a 10, maybe
• A 10, by some standards
• With Banting, insulin finder
• Often unattainable perfection
• Film-award word
• Insulin co-inventer
• Best-possible
• Part 6 of our Christmas Carol