Right after I posted my "worst case scenario" calling for exchange controls by fall of 2009, Jim Rogers (in this Bloomberg article) is basically saying the same thing!

"
May 12 (Bloomberg) -- A rally in the U.S. dollar has run its course and a currency crisis may take place in the fall, investor Jim Rogers said.

“We’re going to have a currency crisis, probably this fall or the fall of 2010,” Rogers, 66, said in an interview with Bloomberg Television in Singapore. “It’s been building up for a long time. We’ve had a huge rally in the dollar, an artificial rally in the dollar, so it’s time for a currency crisis.”

Rogers may consider buying the yen and prefers the euro to the dollar or the pound, he added.
"

Jim Rogers correctly predicted the dollar rally last fall.