Invented online shopping
Will water your plants while you're away
Loves you for who you are** Premium plans only
After messing around with a Yahoo store that always looked terrible, I switched to Shopify.
In my professional life, I've worked extensively with Yahoo store, MarketLive, and recently Demandware. Shopify is a breath of fresh air. Shopify has far fewer features, of course, but the simplicity and speed of updates is fantastic.