The gondola car which Chuck and Agent Rye take downhill identifies the name of the mountain resort the meeting took place in as "Bösewicht Berghütte", which means "Villains Chalet" in English.
Casey's line to Greta, "I don't know you've worked with before, or what crew you were on," is an in-joke, referencing Adam Baldwin and Summer Glau's series, Firefly.
Richard Chamberlain, the Belgian, played Jason Bourne in the The Bourne Identity (1988) mini-series, continuing the trend of having guest stars with famous spy roles.
Summer Glau's character has a sandwich with ham on it. Summer was a vegetarian until she needed to 'bulk up' for her role in Firefly.