Just read about an 18-year-old from Southern California who climbed Mt Everest this week, becoming the youngest person to ever climb all the so-called "7 Summits," the highest mountain on each of the seven continents.
It's quite impressive for anyone to accomplish, especially for someone fresh out of high school. There was a multi-episode show on the Discovery Channel some months ago about climbing Everest, and I recently read a book about the March 1996 disasters while climbing the mountain ("Into Thin Air" by Jon Krakauer).
Mountains are cool. No way I could ever climb anything like Everest or Denali or anything that huge, but they're amazing to see, admire and respect.