A few months ago I promised I would build a bookmarklet for Google Print, but I quickly realized the way they had things configured meant I wasn't able to do so. Well, they've changed things and you can now search Google Print directly (instead of getting results at the top of a regular Google search), and that also means it's now easy peasy to create a bookmarklet. So here you go:
Google Print (for Firefox / Mozilla / Opera) -- drag to your personal toolbar
Google Print (for IE) (right click and add to favorites)
Google Print (for Safari) (thanks to Steve DiDomenico)
I've got quite a nice little collection now :-) In case you missed them, here are my bookmarklets for Google Scholar and Google Video.