User blog comment:KittenOfTheNorth/Rap Battle Ideas/@comment-67.149.91.167-20140108192905

Jimmy Buffet vs Ernest Hemingway- who's the king of Key West and more relaxed

JFK vs Mao Zedong- Communists vs capitalists

Harry S. Truman vs Emperor Hirohito- end of WWII

Mark Twain vs Charles Dickens- battle of epic writers

Eisenhower vs Patton- best WWII generals

Newton vs Aristotle or Archimedes- best scientist, astronomer, philosopher

Frank Lloyd Wright vs Gustave Eiffel- best architect

Groucho Marx vs Jimmy Fallon- best comedian

Arnold Schwarzzenegar(or however you spell it) vs Sylvester Stallone- most bad ass actor

Robert E. Lee vs Ulysses S. Grant feat. John Wikes Booth- best Civil war general and assassin

I think these are pretty good ideas.