Related Clues:

• ''Look'' rival
• You can eat it, play it or live it
• "Hey Mikey!" cereal
• Period of effectiveness
• "Get a __!"
• __ story (biography)
• Game with Lucky Day spaces
• It's "too short for chess": Henry J. Byron
• The birds and the bees, e.g.
• Mikey's cereal
• Long, long sentence
• Word substituted FOR the last word of 23-Across
• Biographer's topic
• "That's __!"
• This puzzle's theme word