My favorite is PHP because it's easy to learn/program in and it's very vaste in it's abilities. I've learned how to program in PHP, Perl, C++, C, Python, and JavaScript, and after learning the bunch I desided PHP is my fav. Perl and Python are pretty easy, but I'm not fond of CGI languages and C++ and Java are nice, but are kind of hard expecially GUI. JavaScript is probably my second favorite, but it doesn't have the same abilities of PHP mostly because it's client-side and not server-side.