This Week's Best YouTube Videos: One courageous rabbit, a Super Mario Wedding Proposal, Earth Day, Symmetry, and More

Some of this week's most popular videos on YouTube focused on weddings - I suppose everyone's in the mood what with the royal wedding this morning. Not only do we get to see The Other Guys doing their own tribute to the huge affair, there were tons of wedding proposal videos trending this week. We figured one of them would be enough. One of this week's most popular videos is another adorable animal - this time a rabbit that gets some love and care from an adopted human

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