“The winner, who will be announced next fall, will have a tough act to follow. Last year the award went to the German artist Hans-Peter Feldmann. Mr. Feldmann, now 70, caused quite a stir when instead of presenting a traditional show he covered a gallery at the Guggenheim, floor to ceiling, in 100,000 used $1 bills. He said he had conceived of this Warholian act as a way “to show the quantity” of the prize.”