Related Clues:

• What 17-Across and 9-, 11-, 26- and 50-Down all are
• Animal and Scooter, e.g.
• Henson's troupe
• Henson characters
• Kermit and company
• 'Sesame Street' cast
• Idiots upset MP in reshuffle
• Having a lead, stops 1,000 dogs, say, getting nits
• Rowlf the Dog and Robin the Frog, for two