It's called Crunchyroll.com: http://www.crunchyroll.com/

Technically, it allows me to stream anime for free, or with a subscription to help me get rid of advertisements. Here are some of the anime I'm watching so far:

• Attack on Titan
  
• Kill la Kill
  
• Sword Art Online
  
• Fairy Tail
  
• Puella Magi Madoka Magica
  
• Cardfight Vanguard
  
• Dragon Collection
  

Surely, the anime on this website can help me expand my horizons beyond MLP. That, and probably Littlest Pet Shop.