I personally find "evidence" for a Designer of Creation in looking at things in nature, our senses (esp. vision), complexities of cell structures etc. http://en.wikipedia.org/wiki/Appendix_testis
Is there anything you "want" to happen w/your brother regarding this? Do you wish he would come to be like you, an agnositic or even an atheist?
garebear and others that accept that we have vestigial organs etc, can you please list the ones that you truly believe are vestigial?
The appendix testis (or hydatid of Morgagni) is a vestigial remnant of the Müllerian duct
, present on the upper pole of the testis and attached to the tunica vaginalis. It is present about 90% of the time.
 Clinical significance
Although it has no physiological function, it can be medically significant in that it can, rarely, undergo torsion (i.e. become twisted), causing acute one-sided testicular pain and may require surgical excision to achieve relief. 1/3 of patients present with a palpable "blue dot" discoloration on the scrotum. This is nearly diagnostic of this condition. Although if clinical suspicion is high for testicular torsion, a surgical exploration of the scrotum is warranted.
Occasionally a torsion of the hydatid of Morgagni can produce symptoms mimicking those created by a testicular torsion; a torsion of the hydatid, however, does not lead to any impairment of testicular function.http://en.wikipedia.org/wiki/Human_vestigiality
Wisdom teeth are vestigial third molars that human ancestors used to help in grinding down plant tissue. The common postulation is that the skulls of human ancestors had larger jaws with more teeth, which were possibly used to help chew down foliage to compensate for a lack of ability to efficiently digest the cellulose that makes up a plant cell wall. As human diets changed, smaller jaws were selected by evolution, yet the third molars, or "wisdom teeth," still commonly develop in human mouths. Currently, wisdom teeth have become useless and even harmful to the extent where surgical procedures are often done to remove them.
Agenesis of wisdom teeth in human populations ranges from zero in Tasmanian Aboriginals to nearly 100% in indigenous Mexicans. The difference is related to the PAX9 gene (and perhaps other genes).
The coccyx, or tailbone, is the remnant of a lost tail. All mammals have a tail at one point in their development; in humans, it is present for a period of 4 weeks, during stages 14 to 22 of human embryogenesis. This tail is most prominent in human embryos 31–35 days old. The tailbone, located at the end of the spine, has lost its original function in assisting balance and mobility, though it still serves some secondary functions, such as being an attachment point for muscles, which explains why it has not degraded further.
In rare cases congenital defect results in a short tail-like structure being present at birth. Twenty-three cases of human babies born with such a structure have been reported in the medical literature since 1884.