What major translations of the Bible are in the Public Domain?

Quoting Biblical text is technically a dicey proposition. While the original manuscripts are obviously public domain, not every translation is. Indeed, the NIV even posts the following [copyright notice](http://www.biblegateway.com/versions/New-International-Version-NIV-Bible/) on BibleGateway: >Copyright Information > >The NIV text may be quoted in any form (written, visual, electronic or audio), up to and inclusive of five hundred (500) verses without express written permission of the publisher, providing the verses do not amount to a complete book of the Bible nor do the verses quoted account for twenty-five percent (25%) or more of the total text of the work in which they are quoted. > >When the NIV is quoted in works that exercise the above fair use clause, notice of copyright must appear on the title or copyright page or opening screen of the work (whichever is appropriate) as follows: > >THE HOLY BIBLE, NEW INTERNATIONAL VERSION®, NIV® Copyright © 1973, 1978, 1984, 2011 by Biblica, Inc.™ Used by permission. All rights reserved worldwide. > >These Scriptures are copyrighted by the Biblica, Inc.™ and have been made available on the Internet for your personal use only. Any other use including, but not limited to, copying or reposting on the Internet is prohibited. These Scriptures may not be altered or modified in any form and must remain in their original context. These Scriptures may not be sold or otherwise offered for sale. Given this, what significant translations of the Bible can I actually quote at length?