Well, you smile a lot when you're selling yourself, but yes. Currently I work under annual contracts, so notice sort of goes both ways. Basically, notice is negotiated for at the beginning of the contract, (if you want it). But, if the other party were to violate the terms of a contract in a meaningful way and I had another opportunity ready, I might very well leave on little or no notice. The closest I have ever actually done in practice was only after calling several meetings with company officials to address specific issues over a period of months. The issues were not addressed to my satisfaction so I found work elsewhere. I got my open projects organized for them and ended up giving four days notice. Oddly enough, they later paid me to interview my successor. I even did some more work for them a couple years later.
Nope, no severance, no advance notice. Simple as that. If you need something after I am gone, we can negotiate the terms at that time.