Because you like Chazz Darvey in Airheads

Shrek is a nasty-on-the-surface ogre with a heart of gold and an earful of wax. See them in Shrek.

WALL-E is a quirky little romantic robot cleaning the wasteland known as Earth. See them in WALL-E.

John Watson is haunted by his past (who isn't) but he's starting to branch out with some help from a world class detective. See them in Sherlock.