That is a good example, and something that is eased by syntax highlighting (although I rarely implement double-bar function literals, keeping a pythonic 'self = this' reference is preferrable in most cases)

Although it is all subjective aesthetics, CS shines when paired with underscore.js, and really all "callback-as-last-argument" paradigms, ie:

  _.each items, (item) ->
     # do stuff with item
     # ...

(edited formatting, also what alec said below :)

If you use anonymous functions a lot, it's amazing:

    result = _.map object, (val, key) ->
        foo(val)
        

is much cleaner than

    var result = _.map(object, function(val, key) {
        return foo(val)
    });

I think.