If you go into Mario Kart TV, you can see all of your videos. You press A while watching (2 if using a sideways Wii Remote), and do the rest from there
So, apparently (at least in the Japanese version), having children with other Miis is an important feature in the game.
I don't really know what anymore
In Danger:
Hitchhiker's Guide to the Galaxy
Dragonriders of Pern
Pikachu
Super Mario Galaxy
Fortune Street
Matt Kunitz
Pac-Man and the Ghostly Adventures
My Little Pony: Friendship is Magic
Trolls
Wario
Mario Kart Wii
Tumble
Uno
Bowser Jr.
Silent Hill
Wii U
Nintendogs
Pig
Safe:
Greninja
Shy Guy...