After hours of questioning by the police, the suspect finally 'cracked'. [=finally told the police what they wanted to know]
The new restaurant 'is not all it's cracked up to be'. When we went, the service was awful and our food was cold.
Is the movie really 'all it's cracked up to be'? = Is it really 'as good as it's cracked up to be'?
(..) I don't know, just... people and fruit and shit. Wow. Well, must be great to be able to make a living doing something you love. Yeah. It's not all it's cracked up to be. Me. - What the f... Oh, hell, no. Uh-uh. Hey, no. You probably don't want to do that with the I.V.s attached and all. (..)2006 Idiocracy