Why does everyone say SOAD is loaded with Tattoos and piercings? I don't think any of them has a visible piercing or tattoo. The only strange thing about their appearance is the beards. Yeah, they have some really weird looking beards. Often their songs reflect this weirdness. But it's good weirdness; it sounds cool, it's catchy and it makes you think. System IS different, I could always tell if a song was by system on the radio (even before I started listening to them) thanks to Serj's crazy Armenian voice. Some people refuse to acknowledge their talent because they're stuck in the days of Slayer and Black Sabbath (who are good... but their time is over), but I think SOAD is truly one of a kind.
System of a Down's style might not be right up you alley, but you can't deny that they're unique.