But the 10-week course itself has always seemed to present the most complicated issues.

"This has to be the most complicated product or service in our economy," he said.

"If you can imagine I had to do the most complicated decision of my life."

The set took 10 days to build, making it one of the most complicated jobs for the show's staff during the season.

"I've worked on some of the most complicated projects in the world."

Finding the store might be the most complicated part of the trip.

And he found what must have been the world's most complicated currency system.

"But he has got to be one of the most complicated people around, because look at all he's doing."

They have the most complicated tax code of any western nation.

It would still be one of the most complicated weapons systems ever built.