Agreed Anil8tor.  I used a strap once....and broke it.  Havent used it since.  I use a antic static pad, bags, etc.  I too touch the case frame (while its plugged in), then unplug and remove components.  You have to be smart about it, but there is overkill.

I would love to test the theory.  Rub feet on carpet, hands on hair, whatever.  Then man handle a pci card.  Test it and find out whats up.  I just happened to have an old scsi card begging to be zapped! >:D