Boris Voronstov, the developer of the ENB Series; which adds graphical enhancements to several games, has been updated with some support for Skyrim. Currently it looks like he has added some SSAO effects, and offers some advice on memory management changes through the INI files to help smooth out gameplay.
Head on over to the ENBDev
website to check it out.
Update: Thanks to tapioks for pointing out that the SSAO and other effects are not in the current version available for download. The author has only posted images of the coming effects and the current download only has some minor and general tweaks and fixes.