In testing out various CMS packages (including our own), I keep needing to get my hands on a block of text for some dummy page or other…. usually this text winds up being the body of the last email I happened to read in Thunderbird. 
In setting up a new Firefox install with my usual kit of extensions, I found another neat one — a one-click Lorem Ipsum inserter: Dummy Lipsum. This extension adds an option to “Insert Dummy Lipsum” under your right-click context menu. It apparently pulls measured amounts of the classic text from the now-even-more-handy Lipsum.com.