The collage above is from the Flickr account of SoundsGood and is from last Halloween. These are images he assembled from the web. You can see a larger copy of this AND all the credits for the photos above here.
A similar jack-o-lantern photo potpourri, "Halloween Faces", can be seen here.
Here are some pleasing photon-pulsing pumpkins, posted by "base10" at Flickr. It's titled "Boylan Lanterns II" and can be downloaded in a larger size here.