I'm not alone with my clone

Bombich Software: Carbon Copy Cloner:

Have you ever wanted a simple, complete, bootable backup of your hard drive? Have you ever wanted to upgrade to a larger hard drive with minimal hassle and without reinstalling your OS and all of your applications? Have you ever wanted to move your entire Mac OS X installation to a new computer? Then CCC is the tool for you!

Now I'm taking my own advice and backing up my whole hard disk.