These are some of my favourite first lines. Capturing the attention of the reader, setting the tone for the rest of the book, and using a lot of commas, apparently:
"I write this sitting in the kitchen sink."
"Mr and Mrs Dursley, of number four, Privet Drive, were proud to say that they were perfectly normal, thank you very much."
"It is a truth universally acknowledged, that a single man in possession of a good fortune, must be in want of a wife."
"All children, except one, grow up."
"In a hole in the ground there lived a hobbit."
"When Auri woke, she knew that she had seven days."
"In the land of Ingary, where such things as seven-league boots and cloaks of invisibility really exist, it is quite a misfortune to be born the eldest of three."