From PEOPLE Magazine Click to enlarge
Three reasons why the smoldering 300 star, 37, is worth fighting for:

1. FANS L-O-V-E HIM
Along with worshipping the Scottish import on Web sites, zealous fans organize conventions in honor of the actor. Last year, "I was in Vegas for my friend's film; meanwhile, there's a convention set up. I would get in so much trouble with fans if I didn't turn up. So I popped in and said hey. It was a lot of fun, but you don't want to make it a habit of turning up at your own conventions."

2. HE'S RUGGED
Though Butler was completely clean-shaven—yes, completely—to better show off his titan muscles in his tiny loincloth, "I only did that because I was told to! Manscaping and all of that is not my thing. I'm more of the Clint Eastwood kind of guy."

3. HE'S LOW-MAINTENANCE
"I definitely like to dress down. I like beaten-up old leather jackets and an old pair of jeans. Even if I buy a new T-shirt, it has to look like I've had it for 10 years."