John and Anna Sheridan's wedding photo is an actual shot from Bruce Boxleitner and Melissa Gilbert's nuptials.
This takes place from December 19 to December 25, 2260.
Anna's story about finding a buried Shadow ship on Mars, and how it awoke when exposed to daylight, is essentially a clone of the driving plot element of Arthur C. Clarke's 2001 A Space Odyssey.
Ambassador Kosh's line "If you go to Z'ha'dum, you will die" was later one of the phrases featured in the opening sequence of Season Five.