Perl

Spawn of, well... Perl's been around much longer than any of the other contenders, and has significant inheritances from awk and Unix shell scripting. Larry Wall's mad "there's more than one way to do it" vision has delighted many Perl developers for years, while leaving some programmers in shock from attempting to read 'obfuscated Perl'.
Perl in the browser Perl's made little headway on the browser, though ActiveState offers a PerlScript module that works with Internet Explorer.
Perl on the server Perl dominated client-side Web development for years, and remains strong in CGI and mod_perl applications. ActiveState's PerlScript also works in Active Server Pages.
Perl and Unicode Perl's needed some revisions to make its incredibly rich text-processing libraries work with Unicode, but the latest versions of Perl can handle Unicode.