I'm not a fan of Tupac, or rap music in general, but I must say that his recent performance at Coachella 2012 was incredibly life-like for someone who has been dead for 15 years.

Of course, it's not Tupac at all, but a recorded holograph of Tupac.  And it makes you wonder what's in the future for entertaiment.  Can I see the original cast of Guys and Dolls please… at my local theater?