If I'm going to create a magazine of some sort then I need to know the market and my competition. So far I have made a note of the main magazines for general men's mags and individual categories:
General
GQ, FHM, Esquire, Arena, Maxim, Shortlist, Loaded, Nuts, Zoo, Maxim, Front, The Chap, Sylk (online only)
Film
Empire, Total Film, Little White Lies
Music
Q, Kerrang!, Mojo, NME, The Fly, Kmag, Metal Hammer, Resident Advisor (online only), Rocksound, Top of the Pops, Uncut, Rolling Stone (not sure if this is US only)
Sport & Fitness
Fourfourtwo, Men's Health , Men's Fitness, Sport (potentially more but will check magazine stands etc)
Cars & Motorbikes
Top Gear, Auto Trader, Car Magazine, Whatcar, Ride, Bike
Videogames & PC
Edge, NGamer, Gamesmaster, Offical XBOX/Playstation/Nintendo Magazine, PC Format, PC Pro
Gadgets & Technology
Stuff, T3
Men's Fashion & Clothing
Arena Homme +, GQ Style, Fantastic Man, Men's Vogue, Umbrella Magazine (online only)
Now there are probably many more for each category but these are the most popular or most well known. I will get some photos of magazine stands to see where these are all placed and to check the rest of the market and competition.