These are the "jumping fountains" (sometimes called "leap frog fountains") located outside of Epcot's Imagination pavilion.
There are many places where one can find videos of dolphins jumping out of water. Perhaps the easiest place to find such videos is on a website called YouTube.
the holy water fountains or font at the entrances of the church
Unmounted horse jumping is called "free jumping", where the horse is free of a rider. An unmounted jumping competition would most likely be called a "Free Jumping Show/Competition".
a vector
It's just called jumping. The Jumping shows are called Show Jumping, and then Hunter-Jumper. From what I have heard, Show Jumping is based on speed and focuses more on the horse than the rider. Hunter-Jumper is about the rider.
i believe you're talking about jumping jacks.
Bugs
They are named for Jack Lalanne who popularized but did not invent the exercise.
Theres a song called: When you think about cheating, but its not a real labeled, recorded song, its just home writen by some guy who posted it on youtube. User: T*rry1326. Theres also another song with a similar title: When i think about cheating by gretchen wilson. Its pretty popular on youtube.
A storage area that is labeled and reserved to hold files is called a file cabinet. They come in a variety of shapes and styles.
a program called youtube downloader
It is just called the upperstage (i found it in a labeled image)