Windows 8 footprint

With the focus on SSD, especially on ultrabooks and tablets, we don't really have that luxury of terabytes of disk space. I was looking at the Acer Aspire S7 with 128GB SSD, and apparently out of the box it only has about 80GB free space left (I confirmed it with Acer America too). This is not cool, if the OS already take about ~30GB of storage. Those that are already using Windows 8, what is the OS footprint on your machine? Is there a way to trim it(ie. uninstalling movie maker or something like that)?