The official beta for ClockworkMod Touch Recovery is available for download for the Samsung Galaxy Nexus (both CDMA and GSM versions of Samsung's Galaxy Nexus), the Nexus S, and the Nexus S 4G. CWM shared the downloads for these on their Google+ page. Koush shared a video of it above, and also indicated that this newest ROM Manager update rolling out has a new option to download ClockworkMod Touch for supported devices as an in-app purchase (or for free at ClockworkMod ROM Manager - Recoveries).

Galaxy Nexus (CDMA and GSM):

http://download.clockworkmod.com/test/touch-tuna.img

Nexus S (GSM):

http://download.clockworkmod.com/test/touch-crespo.img

Source: AndroidPolice and Google+ - CWM