Watchmen has full nudity in it. I don't remember exactly what V for Vendetta has but I do remember it is rated 16+.
If your parents aren't very strict and you watch R rated movies then I have a few more recommendations. I must stress that most of these are very adult focused. Batman The Killing Joke Batman Arkham Asylum A Serious House on Serious Earth Batwoman Elegy (I don't really remember any thing very bad in this one. I just simply forgot it on previous lists.) Animal Man (the Grant Morrison run) The Saga of the Swamp Thing (Alan Moore's run) WE3 Watchmen V for Vendetta The League of Extraordinary Gentleman Severed Lost Dogs Essex County The Underwater Welder Animal Man (The New 52) Swamp Thing (The New 52) All-Star Western Fables The Walking Dead American Vampire The Secret Six. (To read this one you will need to read Identity Crisis followed by Villains United. They both set up back story.)
Well V is for Vendetta is just slightly disturbing and stuff. I wouldn't recommend it for an 11 year old. Wait for a bit. Read the common superhero ones. Like Identity Crisis. And the rest of the crisis series.
Hmm, Im fine with whatever you have to offer, my parents just wouldn't like that stuff, Ill take your pg 13 comic recommendations.
I don't know about Marvel, but with DC the comics are rated. Almost all of the comics are rated T and you will be fine getting those; there is nothing really bad in them. Some of them are rated T+. You probably don't want to get those.
Moon Knight Flash Animal Man Swamp Thing Kyle Rayner Guy Gardener John Stewart Booster Gold Blue Beetle Vision Giant Man Black Panther Nova Firestorm Deadman Hawkman Hawkgirl Aquaman Cyborg Wonder Woman Martian Manhunter Just a few from both DC and Marvel
Aquaman literally sucks. DC just needed a hero underwater. I haven't heard anything about an Aquaman movie but I wouldn't want one. It would be too weird.