[root] StickMount (G.Nexus)

Automatically mount and dismount USB sticks on the Galaxy Nexus
For some reason the current Galaxy Nexus build (writing this on December 19, 2011) does not automatically mount mass storage devices (such as USB sticks) so you can use them from the phone.
Maybe Google will fix this soon, maybe not. Until that time there is StickMount !
Once StickMount is installed and you connect a USB stick with the USB host / OTG cable, the device will show you a popup if you want to open StickMount. It is advised to tell the device that you want to do this by default.
If you have just installed StickMount and you already had a USB stick connected, you must manually launch the program, or disconnect/reconnect the USB stick for StickMount to start working.
Mass storage devices are mounted to /sdcard/usbStorage/xxxx/ .
--- Troubleshooting ---
For some users, the app appears not to work, while in fact it is the device itself or the cable not working. One OTG cable is not the other OTG cable. If you have a USB stick with a light on it, it should light up when you connect it to the Galaxy Nexus using your OTG cable. If it does not, either your cable or your Galaxy Nexus is faulty. 99 out of 100 times it is going to be your cable. That the cable works fine with another device does not mean anything! Cables known to work on a different devices may not work on the Galaxy Nexus (a known example is the Xoom OTG cable).