The zoidberg one is genius. The rest could be solved if tattooists would just come clean with their clients and say 'sorry, I can't do faces.' If you can't draw faces there's no shame in admitting it, people!
Okay, I just had to post this one for the sheer majesty and absurdity (majurdity?) of it all: Tupac Shakur as a unicorn. Let me repeat that once again: Tupac Shakur as a unicorn. Just let those words and the imagery sink in.