On Tiger (yes, Tiger) selecting 11 or more items from the same folder and executing the "Get Info" action would bring up the combined files properties in a single window. Perfect for seeing the total size of those files. I'm on 10.7.5 and the minimum number of files you must choose to get that convenient single window is 67. Any fewer and prepare for an avalanche. I know the workaround (control+command+I), but is there another version of Lion that requires only 11 as before? Is the same problem also present in Mountain Lion?