What magazines do you subscribe to, and why?
I've been subscribing two magazines for a very long time (think decade).
First, one of the best source of science news: New Scientist. I've been reading New Scientist uninterrupted since 1991, and it served me well all these years. Many times when the media broke a story about some scientific breakthrough, New Scientist had already reported it the week before hand.
Second, another good source of motorsport news (as far as European racing is concerned anyway): Autosport.