No, I've never had a need to. I guess I'd better write one now. Here goes:

Hi, prospective employer!

I'm somewhat awesome. Alright, I lied, I'm extremely awesome. Now pick me for your job.

Also, just so you know, I've never had a job in my life and I'm a lazy slacker.

Well, g2g! I have important eCommerce and eBusiness to take care of!

As you can probably tell, I'm looking for an executive position in a large multinational corporation. Golden handshake, here I come.