Related Clues:

• It comes to mind
• "It seemed like a good ___ at the time!"
• Cerebral achievement
• Cable channel that's a blast?
• It'll bring down the house
• Creative start
• Bean sprout?
• Grenade filler
• He cometh, in an O'Neill play
• Brainstormers' goal
• 'What's the big --?'
• It's all in your head
• It has a germ
• Big bang letters
• Brain trust offering