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1.
1. A kickass movie with Will Smith.

2. In Call of Duty 4, when one holds a live frag grenade in one's hand and charges at the enemy in an attempt to kill both oneself and the opposing soldier(s) in the blast. (does not work with flashbang or smoke grenades)
I was about to knife that noob for a 10-kill streak, but he fucking pulled an "I am legend" before I could kill him.
by JJ3672 January 01, 2008
 
2.
An awesome book about a disease that turns all but one man into blood-thirsty vampires, which was adapted into the movie format three times, with varying success. The adaptations range from good (I Am Legend), to average (The Last Man on Earth) to just plain terrible (The Omega Man). Except for The Last Man on Earth, the movies do not follow the plot of the book at all.

It is also the last words spoken by the main character in the book.
"Full circle. A new terror born in death. A new superstition entering the unassailable fortress of forever. I Am Legend"
by DeadCell90 May 05, 2009