A Unicode Test Page
Test page by David Madore covering Russian, ancient Greek, Sankrit and some Chinese.
http://www.eleves.ens.fr:8080/home/madore/misc/unitest/

Sample Unicode Test Pages and Script Links
James Kass created and/or give links to numerous test pages covering over 35 scripts.
http://home.att.net/~jameskass/scriptlinks.htm

Stocznia Jachtowa
Tex Texin provides Unicode sample in dozens of scripts with the corresponding English transliteration.
http://www.stocznia-jachtowa.biz.pl