To put this in perspective, here is what the Giants gave up to move up 3 spots in 2004(even though the Cahrgers drafted Manning 1st, the Giants drafted Rivers 4th and then they made the trade).
San Diego gave up the 1st overall pick
Giants gave up the 4th overall pick in 2004, a 3rd round pick in 2004, a 1st round pick(#12 overall) in 2005 and a 5th round pick in 2005.
Once again, this was to move up 3 slots.
Some of the proposals earlier in this thread aren't even close, in terms of what if would take to move up to #1 overall from the 8-15 slots.