Sure to start neighborhood fights. Been playing around with this site which lets you see which US candidate your neighbors have contributed to. You can even look people up by name. Apparently, you have to be pretty up front about contributing, because even famous people are listed (along with their addresses, which I wont post here). My comments in brackets:

Former pols:

Barbara P. Bush (Retired):
George W. Bush $2,000

Michael S. Dukakis (Professor Northeastern University):
John Kerry $2,000

Walter F Mondale (IR IR):
Bob Graham $500

Henry A. Kissinger (Chairman Kissinger Associates):
George W. Bush $1,000
George W. Bush $1,000

H. Ross Perot (President Perot Systems Corporation):
George W. Bush $2,000

Big money dudes:

George Soros (Investor SOROS FUNDS MANAGEMENT):
John Kerry $2,000
Bob Graham $2,000
Wesley Clark $2,000
Howard Dean $1,000 <-- interesting, he gets less

Donald J. Trump (President The Trump Organization):
John Kerry $2,000
George W. Bush $2,000
[That's a head-scratcher. No, I guess not. Trump just wants
to be on the winning team.]

William H. Gates (CEO Microsoft Corp.):
George W. Bush $2,000

S. ROBSON WALTON (CHAIRMAN WALMART):
George W. Bush $2,000

Big money entertainers:

Jerry Seinfeld (Entertainer Self-employed):
John Kerry $2,000
Wesley Clark $2,000

Jessica Seinfeld (his wife):
Wesley Clark $2,000

[None of the Friends cast, those rich indolent bastards.]

[None of the big shot hosts: Leno, Letterman, Oprah, Colin O'Brien, Kilby, Jon Stewart.]

Barbra Streisand (Actress/ Musician Self employed):
Howard Dean $1,000
John Kerry $1,000
John Edwards $1,000
Dick Gephardt $1,000
Al Sharpton $1,000
Bob Graham $1,000
Wesley Clark $1,000

Susan Sarandon (Actress Self employed):
Howard Dean $2,000

[Pundits: no Michael Moore, Al Franken, Rush Limbaugh, Bill O'Reilly, Ollie North, Ann Coulter.]

Stephen King (Writer Self employed):
Howard Dean $2,000

Tabitha King (writer Self employed [his wife]):
Howard Dean $2,000

Robert Deniro (Filmmaker Tribeca Productions):
Howard Dean $2,000
Dick Gephardt $2,000
Wesley Clark $2,000

Ben Affleck (["]Actor["]):
Wesley Clark $2,000

Edward Norton (Actor Self-employed):
John Kerry $2,000
Dennis Kucinich $2,000

Michael Douglas (Actor and Producer Furtler files):
Howard Dean $2,000

Meg Ryan (Information Requested):
Wesley Clark $2,000

Helen Hunt (Actress Self employed):
Howard Dean $2,000

Steven Buscemi (Information Requested):
Wesley Clark $1,000

The national and city maps are very interesting too.