Related Clues:

• Letters that explode
• ''Drama, Period'' channel
• ''Gone with the Wind'' launched it in '88
• Strong blow
• ___ equivalent (measure of explosive energy)
• 'N.B.A. on ___'
• Big bang cause, and an informal hint to 17-, 23-, 47- and 57-Across
• This stuff can be a blast
• Possible blowup cause
• "Falling Skies" network
• ''Rizzoli & Isles'' airer
• Demo material
• House virtually collapsing, knackered roofs, one lifted in the breeze
• It may work with a plunger
• Sayers portrayed in 'Brian's Song'