Symbols/icons from sci-fi & fantasy

This is the symbol from Conan the Barbarian, the one that Thulsa Doom (the character played by James Earl Jones) uses as his symbol, and the one that Conan (Arnold Schwarzenegger) uses to track down the snake wizard. I've already posted this but got little feedback. I'm seeking suggestions on any symbols or icons from film or TV or other visual media that would be of a similar sc-fi / fantasy theme. Equilibrium has an interesting symbol but not interesting enough and the film isn't epic enough for a tat. I'm debating whether or not cartoons like ThunderCats and Transformers were epic enough, but they have such cool symbols. I already have the Star Wars: Rebel Alliance tattoo, and I'm considering incorporating Star Wars: Empire, Star Trek: Klingon, and Battlestar Galactica.