I have a lengthy list which is very travel and dive focused. Many of the suggestions above are on my list too so I'll stick to other things. This is just a sampling of my list:
I have over 60 countries I want to visit on my list (29 down, 31 as of Feb)
Visit all 7 continents (5 down, 6 as of Feb)
Base Camp of Everest
African Safari (Feb)
Swim/Dive with Whale Sharks (done)
Swim/Dive with White Sharks (the is no such thing as a GREAT white shark)
Swim/Dive with Hammerheads
Swim/Dive with Manta Rays (done)
Swim/Dive with Dolphins (done)
Dive Chuuk Lagoon
See Vimy Ridge (done)
See Easter Island
Get under 200 lbs and stay there
Dive great barrier reef (done)
Have a photo published in a magazine
Exhibit my photos in a gallery
I noticed a number of people have Machu Picchu on their list and also volunteer or humanitarian work. I ran across an organization where you can do both at once:
http://www.globeaware.org/Content/tr...eruprogram.php. Thought some of you might be interested.