10 Special Purpose Linux Distributions | LinuxHaxor.net.

Distributions specifically built for certain applications…

• Scientific
• Security testing
• Educational
• Partitioning tool and disk imaging (parted magic/clonezilla — free clones of partition magic and ghost)
• Multimedia editing
• System rescue
• Gamers
• Religious (WARNING: one of the links under #9 may be NSFW)
• TV/PVR

Some of these come in Live CD form.