Just an avid reader. Mostly SF/Fantasy, some hobbies, paranormal, urban fantasy and lighter, fluffier things.
SpppphhhllllltttTttt!!!! Yeah, right, an old fart in their 50s is going to be able to pick an all time favorite.
I'll list what are likely my most re-read, carted around with me on every move books and just direct you to my favorites shelf on booklikes http://donealrice.booklikes.com/shelf/favorite-books -- which still isn't all that accurate because I've barely imported books over and not begun really editing, reviewing or shelving.
Don't forget that with October having 31 days,
you can do a bonus "Day 31 -
A book that scared the snot out of you."