We have been discussing with our ISP about getting a second link to our main site. So far its all been about installing a second 1gig bearer with a 100mb cap on it to match the first.
So was rather happy when they said they would remove the 100mb cap and give us the full 1gig on both links for the same cost we are currently paying per link. A 10X increase at no extra cost! this is why I love working in academic institutes. Plus i have been meaning to use BGP in anger on a live network so I get to play setting up that up as well