Playing with fire.
Eating huge amounts of food in a single sitting.
I have read most of the books in the Ender's Universe course Ender's Game is my favorite, the Clockwork Century series by Cherie Priest, A Song of Ice and Fire series, 1Q84, The Wind up Bird Chronicles, John Dies at the End, This Book is Full of Spyders.... Recently I have been on a bad zombie novel kick.
...and its kinda awesome