Originally Posted by Skyone

Bravado is great and makes everyone feel great. But one never knows when he/she might need a recomendation letter or similar from that boss you just walked out on. The future is too uncertain in this industry to figure you are hired for life at your new job. Do the right thing and give notice. Your new job might not work out for whatever reason and you just might want back in at you old. Let them be the asses.

I left my last job with a 30 day notice and believe I left on excellent terms. Gave them a little recovery time and still on speaking/email terms with them. But I do agree, never resign or indicate so until you have a sure thing with your new job. Just do the right thing. Just my two fils worth.