Yes,the light source are Regigigas eyes (and Lucario is aiming his punch at its stomach)Maybe it's just the angle, but it doesn't look like Lucario is actually looking directly at Regigigas. Nevetheless, it looks fantastic otherwise. Are Regigigas' glowing "eyes" being used as the light source, by any chance? If so, that's a really nice idea. If not...well, I still like it!
Love to see the full-size version, or at least one that's somewhat larger. (Photobucket can go up to 1024 x 1024 pixels, and DA lets you do even larger than that)