http://www.linuxliveusb.com/en/home
Not only for geeksLiLi is designed to be used by both beginners and geeks.
If you are a beginner, LiLi will let you try Linux for the first time, keeping Windows clean of any modifications.
And if you are a geek, LiLi will allow you to test almost any Linux distributions directly from Windows, or just install them from a USB flash drive instead of CDs.
Since it can use ISOs, probably OK for the majority of rescue discs, & might work with some WinPE versions too.