In Episode 7 of Black Lagoon, Rock and Revy drop in on Balalaika as part of their errands, and find her watching a series of porn videos, which she's either repeatedly rewinding or fast-forwarding through (I can't tell which).
Balalaika doesn't mention why she's sitting through all these pornos, only that she has "15 more to go". It's clearly for work-related reasons, as she takes no pleasure from viewing them and even mutters "Someone shoot me" as Rock and Revy leave, but I'm really not sure what kind of Russian mafia work would involve watching dozens of hours of porn.
What on earth was Balalaika up to? Is it explained in the manga, perhaps? I know it's probably unimportant in the grand scheme of things, but it's really puzzling me.