Several phrases we still commonly use today (ok, well maybe not all of us, but I know you've at least heard your parents say them!) are drawn from the world of letterpress.
Another one I found: Sorts are the individual lead letters and figures kept in a case for use when handsetting type. You get more of certain letters that are most frequently used. SO, when a typographer ran out of 'e's for example, it was said they were "out of sorts."