Samtec TSM-series headers are nice for putting standard .100" 1- and 2-row headers on surface mount boards. http://samtec.com/technical_specificati … series=TSM
The specific part TSM-136-01-T-DV is 36x2 and can easily be broken down to smaller sizes as required for specific boards.
A surface mount .100 header is particularly nice for those of us who home-fabricate single sided boards and want headers sticking out of the copper side.
For female sockets, SSM looks like the corresponding series, but I haven’t bought any of these yet.
Samtec will ship small orders direct to customers, but maybe sparkfun could find room for this part in their lineup as well.