I was excited for that. I've worked in languages that had an `is` operator, and it can result in very readable code. Eg:

  if list is Array {
  
  }

Much nicer than:

  if Array.isArray(list) {
  
  }

Totally. That's one of my favorite things about CoffeeScript and I hope that eventually the keywords make it in to the final spec:

if a isnt b or b is c then return e