nobody have done it vs nobody has done it

Some examples from the web:

• Nobody's done it, that's the problem.
• Nobody could have done a better presentation.
• Nobody has done it before and I don't understand why not.
• I know you've done your best, and nobody could have done more.
• Our scientists have done things which nobody has ever done before.
• Years ago, nobody could have done what you're trying to do now.
• In all the 700 years, nobody's ever done it.
• Nobody's ever done it before, so I'm going to go do it.
• Nobody else had done it before.
• Been here hours, nobody's done anything.
• Nobody's done anything with their lives.
• Nobody's done that since you were programmed.
• Nobody's done that since the 1800s.
• No, nobody had done that.
• Nobody had done a movie like that.
• Nobody's done blackface on TV for a while.
• Nobody's done a deal with him. Nobody's done time with him. Nobody's ever heard of him.
• Nobody's done that to the Flyer before.
• But nobody's done that for centuries!
• First off, because nobody's done that since the '90s.

Some examples from the web:

• Nobody has done it before and I don't understand why not.
• Nobody else has ever even done it here before.
• Nobody's done it, that's the problem.
• Nobody has ever done anything good for me.
• And nobody has ever done that for me.
• You know, something that nobody else has done.
• Our scientists have done things which nobody has ever done before.
• And we show up at the studio, and nobody has one song done.
• In all the 700 years, nobody's ever done it.
• Nobody's ever done it before, so I'm going to go do it.
• Nobody else had done it before.
• Nobody here has done you harm, and you must believe me when I tell you you have no enemies in this house.
• Been here hours, nobody's done anything.
• Nobody's done anything with their lives.
• Nobody's done that since you were programmed.
• Nobody's done that since the 1800s.
• No, nobody had done that.
• Nobody had done a movie like that.
• Nobody's done blackface on TV for a while.
• No one else has done what I've done. Nobody.