THERE WILL BE BLOOD is the new film from writer/director Paul Thomas Anderson and stars Daniel Day-Lewis.  The film is very loosely based on a portion of Upton Sinclair's 1927 novel OIL.  The story surrounds a relentless early 1900's oil man bent on building an empire.  He ends up coming head to head with a fire and brimstone boy preacher for control of a small town and the minds of its people.  Currently the film is nominated for 8 Academy Awards this year.

THERE WILL BE BLOOD official site

Quicktime Trailer 

An informative PT Anderson site 

Upton Sinclair at Wikipedia