As a Calvin and Hobbes and My Little Pony: Friendship is Magic fan, this crossover by Ripfrost (source) is one of the best things I’ve ever seen. Click on the image for a larger version.
There’s more by a different author here:
NAME — Get an avatar
EMAIL — Required / not published
code in a monospace font
How many other fantasy webcomics do you read regularly?
Gaia by Oliver Knörzer is licensed under the Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. See the About page for details.