Young House Love
I always liked these large photos in Young House Love's Bedroom. They actually glued posters to a canvas which you can see on their tutorial here.
But if you didn't want to use a poster and would rather frame a large personal photo you could easily have it printed for super cheap. How? Using the Engineer Prints from Staples...for less than $5! Thanks to Bargain Hoot for pointing this out to me today!
Here is a cute post from Infarrantly Creative on using them in a project.