40G/100G for enterprise data centers

For an article I'm writing for Network World, I would be grateful to
interview network architects as to how (or whether) 40G and/or 100G
Ethernet will change enterprise data centers and/or enterprise campus
networks.

Interviews can be with or without attribution, and can be conducted over
email or phone.

Please contact me offlist if interested. Thanks in advance.

Regards,
David Newman
Network Test