KEEP CALM AND [INSERT VERB HERE] template for Photoshop.
I used CS5 to make this... so yeah.
Font is Gill Sans MT.
The only editable text is the bottom text, because no one should change the KEEP CALM AND part. If you want to change that, then just make a new text layer and delete that one.
Everything is a vector, except for the image you choose to put in there.
That is my doggy, Roscoe, in the picture