http://duke.a-13.net/
Some of my favorites:
# Mario has appeared in 58 different video games.
# Every Massive Multiplayer Online game and expansion with the exception of Meridian 59.
# Every Unreal, every Unreal Tournament, and every game that has used any of the Unreal engines.
#Every Pokemon game released outside of Japan.
#When Duke Nukem Forever was announced, the fastest processor available to consumers was a 233Mhz Pentium. Since then the clock speed of consumer processors has increased over 16 times (32 times counting dual cores), and the fabrication process has decreased from 250nm to 65nm.
#Microsoft released 5 consumer-oriented versions of Windows and might release Vista before Duke Nukem Forever hits shelves.
#Britney Spears' entire musical career as a pop star has taken place during Duke Nukem Forever's development.
#The concept of Bullet Time has been developed, pioneered, and completely run in to the ground.
#Since the announcement of Duke Nukem Forever, the single season home run record has been broken. Twice.
Things that have taken less time than Duke Nukem Forever's Development:
#The Beatles formed, released every single one of their albums and broke up. During this time they also toured the world several times.
#The United States' entire program to put a man on the moon, from Kennedy's challenge to the landing.
* The American War for Independence
* The United States Civil War
* World War I
* World War II and the entire Manhattan Project.
Things that have happened since Duke Nukem Forever's announcement 
