Must-watch videos of the week

(CNN)A time-lapse panorama of London's skyline, a blunder on a TV game show, an awkward moment on "American Idol." These are the videos you don't want to miss this week.

A game show fail

Game show host makes major blunder
Game show host makes major blunder

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    Game show host makes major blunder

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Game show host makes major blunder 01:07
The host of Britain's edition of "Who Wants to be a Millionaire" accidentally congratulated a contestant who answered a trivia question incorrectly.

When live TV becomes uncomfortable

    See Seacrest's awkward moment with Katy Perry
    See Seacrest's awkward moment with Katy Perry

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      See Seacrest's awkward moment with Katy Perry

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    See Seacrest's awkward moment with Katy Perry 00:57
    Longtime "American Idol" host Ryan Seacrest had a cringeworthy moment with Katy Perry when he seemingly didn't realize he was on live TV.

    Ivanka Trump under fire

    Ivanka Trump mocked for smiling at embassy opening
    Ivanka Trump mocked for smiling at embassy opening

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      Ivanka Trump mocked for smiling at embassy opening

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    Ivanka Trump mocked for smiling at embassy opening 03:26
    Ivanka Trump faces criticism as images of her smiling while unveiling a plaque at the US Embassy in Jerusalem contrasted with those of deadly clashes between Israeli security forces and Palestinian protesters at the Gaza border.

    A unique view of London

    This London time-lapse is the first of its kind
    London first panormaic timelapse

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      This London time-lapse is the first of its kind

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    This London time-lapse is the first of its kind 01:00
    Photographers did the first gigapixel photo shoot of London's skyline. There were more than 8 million pixels in each image.

    Spectacular eruption from Hawaii volcano

    See lava spew from Kilauea volcano
    See lava spew from Kilauea volcano

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      See lava spew from Kilauea volcano

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    See lava spew from Kilauea volcano 02:07
    Eruptions continue from the Kilauea volcano on Hawaii's Big Island, including one Thursday that shot ash and smoke 30,000 feet into the air.