Any recommendations for books about crazed rivalries?

[DerekG]

Nothing piques my interest more than stories about two eccentrics who are obsessed with one another. Sometimes it's a couple of ideologues struggling for supremacy, sometimes it's two women fighting for the love of a man.

Could anyone point me to a really entertaining rivalry chronicle?

[rurallib]

1. don't know any books, but the Hatfields and McCoys might be fun to look up.

I dated a girl once who was kind of a relation to the McCoy half. Meeting her 'great' relatives was a hoot. (great uncle, great aunt)

[broiles]

2. Books

To End all Wars by Adam Hochschild is a terrific book about
World War I.  It covers the rivalries among the British
generals, families and the anti and pro war factions.  Its a
great read.