The merits are interesting, and involve complex constitutional arguments about whether it was permissible for Congress and the Attorney General to immunize communication companies for assisting the United States in its massive eavesdropping (without a warrant) of e-mail and telephone traffic after 9/11. The Ninth Circuit, like the district court, says "Yes."
But wholly apart from the merits, check out the caption. Hard to find one that's longer. Nearly 20 pages.
Lots of effort went into this one. Lots.