Episode Synopsis: Futuristic doppelgängers of Barney and Ted try to persuade them to attend a Robots vs. Wrestlers competition. Meanwhile, Marshall and Robin engage in a dance-off. -tvguide
Spoilers ahead, and if there's ever a time you listen to me about spoilers, this is it. You don't want a future self to appear and warn you against getting spoiled. Trust me, that conversation can get pretty awkward, and it's never a good idea to get into an argument with your future self. You never know what kind of future gadgets they might bring back to the present, and that just won't be a fair fight. Plus, you might see that you've gone bald in the future, and that will probably just freak you out.
