In Fallout 3 there was a upgraded power fist called "Fisto!" Fisto makes a return in Fallout: New Vegas as a sexbot that you're required to find for the quest "Wang Dang Automatic Tango." In the quest, you find Fisto in cerulean robotics. Once you release him from his tube, he gives you the option to test him out. After completing the side quest to find a sex robot for the silver rush, Fisto will go to the Silver Rush Casino. Inside, next to the roulette table, talk to him and he'll offer his services, but if you reply "No thanks" it will give you ten caps. This can provide an unlimited supply of caps if you're willing to activate the chat over and over again.