Possible Clues:

• See 63-Across
• 'This —' (NBC comedy-drama series)
• "We have met the enemy and he __": Pogo
• 'We have met the enemy ... and he --': Pogo
• "We have met the enemy and he ___!" (Pogo)
• "We have met the enemy, and he ___" ("Pogo" quote)
• 'We have met the enemy, and he ___' ('Pogo' quote)