"The Blue Planet" (2001)

What it's about: This critically-acclaimed series plunges into the mysterious depths of the world's oceans by traveling to a variety of coasts and poles to examine all of its creatures, big and small. It's narrated by Sir David Attenborough, one of the most famous voices in documentary filmmaking.

Why you should see it: This is a must-watch because our planet is covered by water and there are mysteries and alien creatures in the oceans that seem like they're from another world. The next-best thing to exploring that yourself is seeing those incredible environments and having David Attenborough talk you through fragile and colorful coral reefs, the dark abyss of the deep ocean, and the lives of the powerful creatures of the open sea. [Click to watch]