Must have live cd’s for the computer savvy kid

A live cd is an operating system and the programs on it you can boot from the cd/dvd drive.
1. A linux distro live cd.
There are dozens, I prefer ubuntu.
Why?
To save data on the hard drive if it is failing, to save data if windows refuses to boot up, …
2. The clonezilla live cd
Clonezilla is [...]