Despite not being a big fan of Beans generally, I do find that there are situations in which they are useful. One of those is as configuration objects to pass in to a component. I can add the data in one packaged set.
In reading about Clojure recently, one of the big advantages of Clojure is immutable variables. I wouldn't want immutable variables in ColdFusion all of the time, but it would be really nice sometimes.