Turin Turambar writes: While watching the ROTK:EE trailer, I noticed Cirth runes on the helmet of the Mouth of Sauron. I paused the trailer and some runes were a little difficult to make out; but eventually, this is what I got: "LAMMEN GORTHAUR" (bottom) & "GORTHAUR" (top)

The language is Sindarin and is literally translated: "Voice" (lammen)" & "Dread Abomination (Gorthaur)"

Now, Dread Abomination was the Sindarin name used during the First Age of (you guessed it!): SAURON! (see The Silmarillion p. 23) So what do you get? "Voice (or Mouth) of Sauron"