Set the number of blogs per page to 99999, then select all the text, copy it, paste it to a word processor. While you're about it, do a spellcheck and surprise yourself with all the mistakes.

some skin have a css media defined to help you printing the blog. If you look a the code source, you will see something like that:

<link rel="stylesheet" type="text/css" media="print" href="rsc/print.css" />