http://en.wikipedia.org/wiki/10-gigabit_Ethernet
I would really like those prices to come down and also to use just regular CAT cables.
Right now it seems that the switch to faster than 1 Gbps networking is just too costly and not easily incremental (because of the switch to optical generally.)
PS. There is 10GBASE-T but I think there is zero adoption or promotion of this substandard: http://en.wikipedia.org/wiki/10-gigabit_Ethernet#10GBASE-T