Gearing Up for the Alito Confirmation Hearings: Documents Fuel the Debate

Excellent Compilations
(provides links to information about, and writings by Judge Samuel Alito, including his court opinions):

• LC's Samuel A. Alito Nomination Collection by Emily Carr, Legal Reference Specialist, Law Library of Congress
• University of Michigan Law Library's Alito Resource Page
• Records from the National Archives
• Judge Samuel Alito Published Opinions (free searchable version provided by askSam)

Analysis of Judicial Opinions

• Five CRS Reports on the Court Opinions of US Supreme Court Nominee Samuel Alito
  (1) Abortion; (2) Church & State; (3) Civil Rights; (4) Freedom of Speech; and (5) Civil Rights of Individuals with Disability
• YLS Alito Project Report (comprehensive review of Judge Alito's judicial opinions)
• TaxProf Blog's The Complete Tax Opinions of Judge Alito

Battle of the Briefing Books
(hardly comprehensive, hardly bipartisan (even in selection))

• Alliance for Justice. Report on the Nomination of Samuel A. Alito to the United States Supreme Court (pdf) (featured in a separate post published in today's Law Librarian Blog)
• People for the American Way. The Record and Legal Philosophy of Samuel Alito: "No One to the Right of Sam Alito on this Court" (pdf)
• Moving Ideas. The Progressive's Guide to the Samuel Alito Nomination
• NAACP Legal Defense and Educational Fund. Report on the Nomination of Judge Samuel A. Alito Jr. to the Supreme Court of the United States (pdf)

See also the Washinton Post's archive on the Campaign for the Supreme Court

Totally unrelated but .... SaveTheCourt.org's Interactive Guide to the Nomination Process