I'm playing Minecraft with the Painterly Texture Pack, but the zombies that come with it are a bit too gory for me, so I made my own, more friendly version.
Things are broadly in the same place as with the default Minecraft zombie, but I've added 1 part PvZ, 1 part Frankenstein's monster.
Hit download to get the skin.
(You should be able to swap it into whatever texture pack you're using (or your minecraft.jar) currently with 7zip or something. That's whit I've been doing, anyway.)