I call myself a geek and nerd all the time, but I don't consider it something negative. I'm glad I play video games and watch anime, I don't think I would enjoy any other hobbies as much as I do these ones.
The thing is, just liking something doesn't make you a geek or nerd, it's just what you like to do, and there is nothing wrong with liking something over something else.
There are all kinds of people who watch anime and play video games. For instance this may be hard to believe but I was the captain of my high school football team, and it was said earlier that someone was better at pong than people who play it all the time.