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Dynamic Texture Pack Generator (players skin on mobs) [1.3]
This PHP tool dynamically assigns a players skin to a mob through the server texture downloader.
Upload the files to a folder on your web server. Apache is required as this uses the apache mod_rewrite module. Find a similar feature with your web server if you use something other than apache.
After you upload the files place the URL to http://yourwebsite.com/somefolder/tpack.zip in your server.properties file after texture-pack=.
You can modify config.php to select which mobs that have a 64x32 textures you want the players skin to be placed on, by default it places the skin on all of the mobs which have the same shape as the normal player.