Ice Cream Sandwich themes are pooing up all over the place, but for some truly authentic fake Ice Cream, you've got to get the audio experience as well. Luckily a kind soul who is likely waiting just as patiently as the rest of us for Ice Cream Sandwich (that is to say, not patiently at all) has posted the audio files from the Galaxy Nexus online for everyone. You can download the ZIP file here.
Combine the audio files with the new Galaxy Nexus wallpapers leaked a while back, and top it with the unofficial Ice Cream Sandwich third-party launcher, and you might be able to fool yourself into thinking that you own a genuine Ice Cream Sandwich phone. If you squint a little. And you're drunk. But Android's all about customization, so who are we to judge.
If you're ready to take the plunge and install a real version of Ice Cream Sandwich on your phone, ports of the SDK files are showing up for the Nexus One and Nexus S. SDK ports aren't especially stable, but they should allow you to get a decent feel for Android 4.0, and they're the best we're likely to get before Google releases the Ice Cream Sandwich source code, currently set for sometime before the end of the year. We live in hope.
Galaxy Nexus Hands-on
Ice Cream Sandwich Hands-on