Car magazines: Daily Driver, Road & Track, any muscle mag. And i'm sure someone on here is gonna of course post Hightimes.
not so much stoner material, but i read rolling stone, canadian art, transworld snowboard, canadian architecture&design and occassionally i'll peruse xxl.
The folks over at Blue Canvas have me hooked on their ARTicles. They have a pretty good spread of photos throughout their magazine so you get to see some nice prints of myriad artists' works. Their site: Bluecanvas: The Artist Network