Between this and his open hatred of George Takei, William Shatner is really playing fast and loose with his sci-fi loving fandom. There's plenty of nerd love to go around when it comes to movies or TV shows about people flying through space having sex with alien babes, but Shatner apparently thinks if you don't reject Star Wars for Star Trek you're a total turncoat. Adam Horowitz, who is a writer and producer for a lot of things, had a Star Wars commercial air during one of his shows, and it excited his light-saber-loving brain. He tweeted about it, and William Shatner responded.

Sources: William Shatner