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 know a lot about you. - Who are you? - My name is Trinity. Trinity. The Trinity? That cracked the lRS D-base? That was a long time ago. - Jesus. - What? I just thought ... ... you were a guy. (..)1999 The Matrix