Star Trek DS9: The Magnificent Ferengi
Lost ds9 episode that is just all like this. Sisko goes through the main plot and keep getting temporarily interrupted by people obviously caught up in their own, unexplained B-plots.
Sisko: We must bombard the wormhole with Fluxon particles or the whole sector will blo-
Julian: Excuse me for interrupting, commander. Have you set the quarters I requested to boron argon atmosphere? And a 55c temperature?
Sisko: Yes, I have Doctor.
[Julian hurries away, fastening his Roman toga as he goes]
Sisko: Anyway, we have to- Now what?
Jadzia: Oh, never mind us.
[Jadzia and Nog passes through ops, carrying an unconscious Gul Dukat between them]









