 During the last flashback, you can see Anthony Cooper serving a bottle of MacCutcheon 60 Whisky to Locke, the same type used by Mr. Widmore (Penelope's father) and Desmond, Charlie and Hurley in 'Flashes Before Your Eyes', and Sayid in 'He's Our You'

For the scene where Locke is thrown out the window, the footage of Terry O'Quinn ended when Locke is behind a pillar.Afterwards it is a stunt double, who also crashed through a fake window.The aerial scene of Locke falling had the same double falling attached to a harness in front of a bluescreen.