Although I've happily switched over from the dark side since June, I'm still somewhat of an OS X n00b, so please excuse me if these questions have been asked before. On windows, if you want to know how much space an application takes up on your HDD, you can just right click on the app's folder and hit properties, or go into add/remove programs and the space will pop up right there. I'm a little confused about how to calculate the same number in OS X. For example, iDVD takes up 81.4MB in the application folder. However, the real number is a lot higher, since it has a bunch of templates and stuff in Library > Application Support. 1.69GB worth of templates, to be exact. That's a lot of space on my 160GB MBP HDD. Is there an easy way to find out exactly how much space an app uses in OS X? Also, if I delete iDVD by moving its icon in Applications to the trash and emptying it, will it also delete its associated Application Support files?