Steve, at Careful Thought II, did a post recently on the "Young Earth vs Old Earth" debate.
I'm not a scientist, but for years I have followed this, as well as the whole evolution vs creation debate. The interest was sparked about 20 years ago, when I attended a creationist seminar put on at Northwestern Bible College. The main speaker was a man named Dr. Walter Brown. Dr. Brown was an evolutionist, until he started researching the account of Noah's Ark. That led him down the path to becoming a creationist and believer in the Bible. He is a very brilliant man, as demonstrated by his degrees and resume. He is a believer in a young earth, and if you're interested, you can see his reasons at the website for his Center for Scientific Creation.
I've always gone by the belief that I don't have to prove to anybody that evolution is a hoax, I can simply point to quotes by scientists (many of them evolutionists) themselves that debunk the whole theory they so wholeheartedly defend. Such as:
"Scientists who go about teaching that evolution is a fact of life are great con-men, and the story they are telling may be the greatest hoax ever. In explaining evolution, we do not have one iota of fact."
Dr. T. N. Tahmisian (Atomic Energy Commission, USA) in "The Fresno Bee", August 20, 1959. As quoted by N. J. Mitchell, Evolution and the Emperor's New Clothes, Roydon Publications, UK, 1983, title page.
"The intelligent layman has long suspected circular reasoning in the use of rocks to date fossils and fossils to date rocks. The geologist has never bothered to think of a good reply, feeling that explanations are not worth the trouble as long as the work brings results. This is supposed to be hard-headed pragmatism."
J. E. O'Rourks, "Pragmatism versus materialism in stratigraphy". American Journal of Science, vol. 276, January 1976, p. 47
"The chance that higher life forms might have emerged in this way is comparable with the chance that 'a tornado sweeping through a junk yard might assemble a Boeing 747 from the materials therein'."
Sir Fred Hoyle (English astronomer, Professor of Astronomy at Cambridge University), as quoted in "Hoyle on Evolution". Nature, vol. 294, 12 Nov. 1981, p. 105
"The absence of fossil evidence for intermediary stages between major transitions in organic design, indeed our inability, even in our imagination, to construct functional intermediates in many cases, has been a persistent and nagging problem for gradualistic accounts of evolution."
Stephen Jay Gould (Professor of Geology and Paleontology, Harvard University), "Is a new and general theory of evolution emerging?" Paleobiology, vol. 6(1), January 1980, p. 127
This is just the tip of the iceberg regarding evolutionist's quotes that defy their standard religious dogma. I agree with Ann Coulter---evolution is a religion, not a science.