11 letters Classic TV intro ... or a hint to the starts of 16-, 22-, 30-, 42- and 47-Across Answer: HERESJOHNNY
11 letters "From hell's heart I stab at thee; for hate's sake I spit my last breath at thee" speaker Answer: CAPTAINAHAB
11 letters Pirate's guide that's hinted at phonetically by the starts of 17-, 29- and 44-Across Answer: TREASUREMAP