There is a crew on your flights, right? I mean, you could fly yourself and own your own plane. You could have a crew but aren't paying attention to them because you're busy flying your plane... ;) :)
If you get the timing right on Short trips to NYC (EWR, JFK) from Vienna via Air Austria occasionally. You are catching the crew after a short Layover.
Delta DTW (Detroit) to Tokyo occasionally, United Newrk to Tokyo, Chicago (ORD) to Tokyo, Lufthansa Franfurt to any major hub
Crews like bidding for the same trips, few Airlines restrict this as it is considered a desired perk. Emirates is one of the few that assigns crew and does not allow them to bid - I have been told this I do not know if it is true