The 11 best videos of the week!

See how man changed during 2,660-mile hike
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    See how man changed during 2,660-mile hike

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See how man changed during 2,660-mile hike 04:52

(CNN)Rand vs. Ron. A man on a grueling 2,660-mile hike. And something completely different.

These are your best videos of the week:

1. A selfie every mile

When Andy Davidhazy decided to hike from Mexico to Canada, he chronicled his trip by taking a selfie every mile. He lost 50 pounds.
    The video can be seen at the top of this story.

    2. They were swangin'

    Call them "the swingers next door." Call them (as A&E did) "Neighbors with Benefits." Now, you can also call them canceled -- but first, CNN's Lisa Respers France casts a gimlet eye on these friendly folks who get particularly friendly with their neighbors.
    Watch the video:
    Meet the swingers next door
    Meet the swingers next door

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      Meet the swingers next door

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    Meet the swingers next door 02:05

    3. No need for a needle

    New patches developed at Georgia Tech use "microneedle" technology to inject vaccines. Forget the syringe; here's the future.
    Watch the video:
    New vaccine technology is almost needle-less
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      New vaccine technology is almost needle-less

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    New vaccine technology is almost needle-less 01:24

    4. Your brain, taken to task

    Multitasking isn't what you think it is -- literally. CNN's Sanjay Gupta demonstrates what the brain is actually doing.
    Watch the video:
    Your brain on multitasking
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      Your brain on multitasking

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    Your brain on multitasking 02:01

    5. And now for something completely different

    What's the greatest, funniest, most quotable and best-acted movie of all time? If you said "Monty Python and the Holy Grail," you're probably wrong. Nevertheless, CNN's Todd Leopold has this tribute to the legendary comedy.
    Watch the video:
    'Monty Python and the Holy Grail': 40 years later
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      'Monty Python and the Holy Grail': 40 years later

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    'Monty Python and the Holy Grail': 40 years later 02:29

    6. Cheeseburgers and golf: A history of the Masters

    Think of the Masters golf tournament, and you probably think of azaleas, Amen Corner and Tiger rounding the turn. But the famed golf tournament is so much more.
    Watch the video:
    Cheeseburgers and golf? A history of the Masters
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      Cheeseburgers and golf? A history of the Masters

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    Cheeseburgers and golf? A history of the Masters 02:48

    7. Levine's close call

    Maroon 5's Adam Levine was a little too popular at a concert recently. It's one of many fan ambushes CNN's Jeanne Moos looks at, including one that knocked a grand piano off its platform.
    Watch the video:
    Adam Levine has 'terrifying' moment on stage
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      Adam Levine has 'terrifying' moment on stage

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    Adam Levine has 'terrifying' moment on stage 02:18

    8. Remembering Walker's wizardry

    Paul Walker's death left a terrible hole in the "Furious" franchise. Here's how the cast dealt with his passing and created "Furious 7."
    Watch the video:
    How did 'Furious 7' film Paul Walker's scenes?
    How did 'Furious 7' film Paul Walker's scenes?

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      How did 'Furious 7' film Paul Walker's scenes?

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    How did 'Furious 7' film Paul Walker's scenes? 02:34

    9. Rand vs. Ron

    What's the difference between Republican presidential candidate Sen. Rand Paul of Kentucky and his father, former presidential candidate and Rep. Ron Paul? We break down the differences.
    Watch the video:
    What's the difference between Ron Paul and Rand Paul?
    What's the difference between Ron Paul and Rand Paul?

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      What's the difference between Ron Paul and Rand Paul?

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    What's the difference between Ron Paul and Rand Paul? 01:46

    10. Winter is (still) coming

    The new season of "Game of Thrones" starts Sunday night. Remember what happened last season? We catch you up.
    Watch the video:
    What you need to know before 'Game of Thrones' premieres
    What you need to know before 'Game of Thrones' premieres

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    What you need to know before 'Game of Thrones' premieres 03:15

    11. A drop of water

    How big is your water footprint? The answer may surprise you.
    Watch the video:
    How much water is in your grocery cart?
    water shortage food groceries stephanie elam orig_00012525

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      How much water is in your grocery cart?

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    How much water is in your grocery cart? 01:52