My one cat, Andy, sits by my door early in the morning and waits for me to get up. When I do, he walks to the bathroom because he knows that's where I'll be going first. He rubs against my legs when I'm trying to get ready for work/school, which usually means my pants get covered in cat hair.

But he's such a sweetie, so I always forgive him.
He also loves ice cubes. My mom puts some in his water bowl pretty much daily and when he goes to get a drink he'll pick up a cube with his paw and toss it onto the floor.
Another one of my cats, Booger (don't ask about the name XD), will jump up and grab my hand with his paws if I'm standing above him and he wants pets. He's so smart!
Jam it back in, in the dark.