As the credits roll in "Atonement" Jason Carter "Marcus" is singing Gilbert and Sullivan's "I am the very model of a Modern Major General."
The closing credits for the final episode, "Sleeping In the Light", include shots of all the major characters as they are when the episode took place (20 years after the events of the series), whether or not they are present in the episode. Ranger Marcus Cole, who sacrificed his life to save Ivanova, is represented by the control and information panel on a "coldsleep" hibernaculum -- presumably where his body is being kept until he can be revived.
The opening narration and musical theme changed with every season.
During the first run of the show, the titles for seasons 2 and 4 changed as character changes took place. In season 2, before Delenn's new makeup was revealed the "old" Delenn was shown; and for the first few episodes, Claudia Christian was identified as "Lt. Commander. Susan Ivanova". After she was promoted this was changed to "Commander Susan Ivanova". In the fourth season, at first Jerry Doyle is identified as "Security Chief Michael Garibaldi" while Jeff Conaway was billed as "Zack Allan". Halfway through the season when Garibaldi resigns and Allan is promoted, the credits change to "Michael Garibaldi" and "Security Chief Zack Allan". However, the DVD/R1 release of Season 2 has all the credits showing the new Delenn and "Lt. Commander Susan Ivanova"; and the Season 4 has all credits showing "Security Chief Michael Garibaldi" and "Zack Allan".