I can point you to a leading Korean scientist that's good at cloning, or perhaps you're interested in claims of cold fusion?
Gosh, you got me. I don't have a quote of a "leading scientist" saying, "I declare that there is nothing more to learn about evolution." However, finding a lot of quotes that say the equivilent of, "What total nonsense, shut up" isn't that difficult. I believe that's pretty much been the line on contrary scientific thought since about 50 A.D.