Findings:

• doc adobe (user)
• sea doc (user)
• Doc Tiek (user)
• Google Documents
• Doc D (user)
• Doc Severinsen
• Doc Bolin (user)
• E2 Editor Doc - Buttons and Knobs (document)
• langue d'oc and langue d'oïl
• Eh, what's up, Doc?
• -ock
• Doc Vampire-Hunting Dog
• Doc Cox
• Doc Hammer
• Doc Paradyse (user)
• Doc Roe (user)
• "Doc" (user)
• doc
• E.E. "Doc" Smith
• Doc Holliday
• Doc Charlie (user)
• The D.O.C
• Doc Savage
• What's Opera, Doc?
• Langue d'oc
• François "Papa Doc" Duvalier
• Doc Martens
• Doc Johnson
• Doc Martens and Tater Tots
• smut doc (user)
• Archived E2 FAQ: Using Special HTML Characters (document)
• Doc Hill
• Doc Bean (user)
• Doc Otis Hard Lemonade
• Doc Hedgerton
• Doc Robot (user)
• doc (user)
• Doc Hollywood
• DOC++
• Doc Hopper (user)
• Doc Watson
• Jean-Claude "Baby Doc" Duvalier
• Doc. Fondle (user)
• Doc Brown

If you Log in you could create a "Doc Ock" node. If you don't already have an account, you can register here.