Private contract: Kill <playername>! is a holotape in Fallout 3.
Location
The holotape is carried by the Talon Company mercs who will regularly attack the Lone Wanderer if they have good Karma.
Transcript
Boys and Girls, we've got ourselves another holier-than-thou white knight needs putting down. Here are the details:
Name: &PCName;
Race: &PCRace;
Sex: &PCSex;
The bounty is 1000 caps this time around. And, for a change of pace, they want the head this time.
Good hunting!