Its a pretty solution for something that already was in Tiger. What is wrong with it? It would probably be easier to mention what ISN'T wrong. First off the displayed stack MOVES when you have the Genie effect on. So take your mouse off the dock and your target moves. Its worse on Fan view then grid so I don't use Fan for ANYTHING. Nice design Apple. Second the icon in the dock is ever changing. This is beyond retarded and speaks to the notion that this was Jobs's baby and NO ONE would dare tell him its a flawed idea. I mean really. What the heck use is an icon as a representation of a folder if it continually changes? Third "view as" should have a open in finder so people who want the "normal" view can get it. Fourth. The view is SLOW as hell to show the contents of the icon. I have my docs folder in the dock and it takes a good 3 seconds to change the icons to preview icons granted I have about 50 files in that folder but still. Once you do it once its fine but it looks unprofessional to watch your icons render because Apple did a crap job on Stacks. There are probably more. I can't think of them off the top of my head.