http://www.virindi.net/junk/rpm_kerbal.png
Can be somewhat annoying to reproduce since it depends on orientation. However, this seems to happen when the eva'd kerbal is very near the pod in question. I have had it occur with a 1-kerbal lander pod.
Note that texturereplacer (reflective helmet) and scatterer were running in this screenshot. I am not sure if either is related.