Visit Imaging Resource for full-resolution photos (those labeled 50.0 mm focal length) taken with the E-PL1 and Olympus Zuiko Digital ED 50mm F2.0 Macro combination. Clicking on the Full EXIF Display button below each thumbnail gives more information about the picture and lens used.
The image quality (noise at higher ISO, sharpness and detail) is pretty impressive. Read a related forum reaction on DPReview.