Possible Clues:

• March who hosted "The $64,000 Question"
• Country singer Ketchum
• Computer in "2001: A Space Odyssey"
• Holbrook of "The Firm"
• Royal pal of Falstaff
• Computer in '2001: A Space Odyssey'
• Baseball exec Steinbrenner
• Dave's nemesis in 2001
• Prince who became Henry V
• Roach of silent films