Lyta says that if she breaks the rules, she could be thrown out of the Psi Corps. It is later established that Psi Corps does not allow any telepath to leave.
When the dust smuggler goes through the scan, it shows an outline silhouette with the location of the packet of the drug he is carrying about where a breast pocket would be, but after he surrenders, Garibaldi pulls the packet from one of his trouser pockets.
In a conversation with Sinclair, Delenn is puzzled by the word "poet". In The War Prayer (1994), an old friend of Delenn's appears, who is a poet.
In the beginning of the movie when the hostage situation is occurring when the hostage is first shown her hair is covering her face. The camera switches to Sinclair and when it switches back to the hostage her hair is no longer in her face.
When Caroline opens the box with the badge, she places her left hand on the side, then lowers it. It then cuts to a different angle and her left hand is on it again.
The Senator orders Sinclair to cease any involvement with the investigation, and Lt. Cmdr. Takashima to take his place on the advisory council. While the latter is a diplomatic matter, the investigation would be a security-- and therefore military-- issue. A senator cannot give a military order. (A Senator giving a military order actually is a plot point in season 3 of the series.)
Carolyn Sykes mentions that she has bed sheets that are said to be frictionless. If that were true, she and Sinclair would be sliding out of bed all night. Furthermore, no one could make the bed with them or even move them.
At about 1:14:03, when Sinclair and Garibaldi exit, the door shakes as it closes.
Oxygen breathers have quarters with regular doors, However, the aliens with altered breathing requirements seem to be on display, like they are in a zoo.
When officers find that Ambassador Kosh has collapsed, Cmdr. Sinclair tells Lt. Cmdr. Takashima to "get security" even though his Chief of Security Michael Garibaldi is standing next to him.
When Dr. Kyle is trying to convince Laurel Takashima that they should get Lyta Alexander to a mind scan on Kosh, Takashima says that she hasn't broken rules for a really long time. And yet, not five minutes before, at the beginning of their conversation it is revealed that she broke the rules by growing her own coffee plants.
Londo's opening narration implies that Sinclair was Babylon 5's final commander. However, there were at least two after him.