'All For One', performed by Five for Fighting Was written specifically for the episode
This is the 100th episode of the show.
English translation of title is 'if perhaps.'
In the news clip describing Doris McGarrett's death, the reporter described the McGarretts as living in `Aina Haina. This is the real life location of the Bayer Estate which appears as the McGarrett house throughout the show.
In his "what if" dream Danny is finally the one driving his own car with Steve.