This marks the third time that (be it visible or by mentioning) Rush is referenced. This time it is the song 'YYZ', which features a drum solo by Neil Peart, that is considered to be one of the most difficult to play.
When Katya hears Barry's name, she calls him a zloi mudak; in Russian, this roughly translates as "evil asshole".
After entering Krieger's apartment he and Archer walk by a room with a large number of car air-fresheners hanging from the ceiling. This is a reference to the bedroom from "Se7en" that contains a comatose drug-addict, the air-fresheners being used by the film's serial killer to mask the body's odor.