Two months after the Android 4.0 Ice Cream Sandwich source code dropped, we're starting to see more exotic custom ROMs appearing for popular devices like the Samsung Galaxy S II. One such ROM comes from XDA's adyscorpius, and brings MIUI 4.0 and Ice Cream Sandwich to the Galaxy S II. MIUI 4.0 Fresh includes most of the features that you'll need to use this thing as your daily driver, if you're into the look and feel of MIUI.
The current version 2.1 features full 8MP camera support, as well as external SD support, so you shouldn't need to sacrifice any of your device's basic functionality in order to enjoy the unique ICS/MIUI combo. For download links and a full feature list, check the source link.