In Give Up, Robot, you undertake a series of single-screen tests designed to measure your grappling skills. Some will have you swinging across chasms, others have you using rotating hooks to slingshot yourself across the screen.
Die - and trust me, you will, often - and those Portal touches reappear as the AI offers encouragement - "You're the best, Robot!" - and even affection - "I love you, Robot!"
Did you give up?
Give Up, Robot [Adult Swim]