FSA on Campy Record
You can now switch to a relatively inexpensive FSA Crankset that runs a 50/34 cog. That means, you lose some on the top end, but you don't have to go to a triple in most cases.
Also, this let's you swap to an ISIS bottom bracket which is much stiffer than stock Campagnolo.
Overall, I see quite a few people on Dura-Ace or Campagnolo using the FSA cranks. I also saw in "Colorado Cyclist":http://www.coloradocyclist.com/common/products/productdisplay2_v2.cfm?PRRFNBR=34891&CGRFNBR=783&CRPCGNBR=783&CI=783&TextMode=0
It is called the FSA SL-K Compact Carbon Crankset and EXO Bottom Bracket. Now that is a mouthful.
For the real nerds, "FSA":http://www.fullspeedahead.com/fly.aspx?layout=tech&cid=57 has a great white paper on the differences between Octalink, ISIS and external bottom brackets. Great reading to sleep by!