How to create a bootable USB Ubuntu drive

How to create a bootable USB Ubuntu drive: "The Ubuntu desktop distribution is full of nifty tricks. One of those tricks is the ability to create a bootable USB Ubuntu drive quickly and easily. Used to be this trick wasn’t so easy. Not only did you have to format the USB drive, you had to manually create the file systems, copy the files, add a boot loader, and hope that it worked. Sometimes it didn’t, so you’d have to start all over again. All of this was done via the command line."