ANSWER
#1 Nighthawks, by Edward Hopper
#2 Persistence of Memory, by Salvador Dali
#3 Arrangement in Gray and Black (commonly referred to as "Whistler's Mother"), by James Whistler
WHO GOT IT RIGHT: Marc Quinlivan, Matthew Harrington, Bob Milligan, Marika Thiessen, John T, Jim Ahumada, Andie J, Dan McCarthy, Russ Shaw, and Cindi Lou.