Oh jeez. BITD what didn't I borrow to all out steal from other media to use in my D&D campaigns.
He-Man/Superfriends/GI Joe/pretty much any cartoons, "the Barbarians" (Conan and Thundarr, respectively) , comic books (mostly X-Men), world mythologies, movies (particular scenes, character concepts, and/or plot devices from Flash Gordon, Time Bandits, and Legend immediately come to mind), ancient-to-romantic-to-modern literature,... you name it, I could glean anything from general (or specific) inspirations to all out full content plagiarism (with names and places changed to protect the innocent, i.e. me).
In other words, "Ch'yeah. Of course!"
How many of you have created and played homebrew campaigns that were pulled from another source, like a book, movie, etc?
I broke out my old comics, and I'm really thinking about running a campaign based off the the Aircel comic: The Adventurers from the 80s. Anyone else do something like this?

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.