Alan, I came up with the same conclusion. The '05 makes it a little clearer when it talks about the "all metal piping systems and all metal parts in contact with the circulating water shall be bonded together".
I'm convinced that even under the '02 NEC we still need to bond thing (Piping, metal parts, heaters) even if we have a double insulated pump that would not get bonded.
I'll be looking at the installation manual the next time I have an inspection and see what they say about any bonding when there is a double insulated pump.
