How do you choose what book to read next?

This year I'd really like to whittle down my reading pile by reading more of the books I have and buy less books.  So, I have come up with what I think is a fun yet interesting way to choose which book I read next.

The first thing I did was arrange my books into two piles, firstly the review pile.  I aim to read those first before reading the second pile which consists of my own books.

Next I arranged my two piles into alphabetical order of last names and I then put them back on the shelf.

Now comes the fun part.  Starting with my review pile I have numbered each book from one onwards and then using a random number generator I pick my next book.

So after I finish a book I use a random number generator to tell me which book to read next.  It's pretty fun and leads for a surprising reading experience as I never know what book will get picked out next.

So what about you?  Do you have a special way of picking out what book you read next?