Best Last Line of a Book vs Worst By Jonathan Berman

Best last line of a book:

Olaf Stapledon's Starmaker

Strange that it seems more, not less, urgent to play some part in this struggle, this brief effort of animalcules striving to win for their race some increase of lucidity before the ultimate darkness. 

Worst last line of a book:

Dan Brown's Angels and Demons

“You’ve never been to bed with a yoga master, have you?”