IMO, some of the Greatest.

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  Equestria's First Human A lightning bolt has teleported a human to a world full of happy, colorful, talking ponies. Holy.... by Ceehoff 127,951 words · 2,114 · 222
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  No, I Am Not A Brony, Get Me Outta Equestria! A non-brony is transported to Equestria by BronyWriter 110,814 words · 4,712 · 227
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  This isn't my House! A man and a unicorn discover their bathroom is no longer their own and other tales. by treg388 13,118 words · 1,096 · 20
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  Pulling Through The story of how you get through High school with the help of your friends... by Noponythere 47,094 words · 321 · 21