Why are we posting this? So you all can see Scarlett Johansson looking all sexy librarian (or detective, or whatever she’s being) in this PSA and movie poster for her film The Spirit, or course!

Oh yeah, and to remind everyone to please, think of the trees, and recycle your old cell phones. Eva Mendes is also appearing in similar ads to help the Environmental Media Association and Lionsgate to educate people on the toxins in cell phone parts and the CO2 emissions produced in the manufacturing process.

Again, more importantly, Scarjo=hot eye candy.