This episode includes a 'wake' for the deceased Col. Raymond Foerster, played by Richard DeAngelis, and seen as a photo. DeAngelis did in fact die on 28 December 2005 of prostate cancer, aged 73.
At Old Face Andre's store, the prostitute he was flirting with is Dee Dee, an addict who appeared for the first time in the series in Hamsterdam, asking for an eight-ball (S03 E08) and later will become a recovering addict (S05 E02).