[H] Two NICs

[Winterlight]

Every Motherboard I have purchased in the last ten years has twok Gb 
NICs. I understand that they can be used for two different Networks, 
but I have yet to find anyone who needs to do this let alone actually 
uses them. It seems to me to be about as useful as the Firewire port 
they seem to put on all high end boards. Does anyone here use their 
two motherboard NICs? Is there a great use for the extra NIC that I 
am unaware of? Has someone found a creative way to employ two NICs or 
is this just another dead feature that hasn't fallen to wayside as of yet?