I asked for an exit row and knew that economy was way overbooked. The agent said that they'd like to welcome me to business class today and asked if I wanted the C class exit row... well we all know the answer to that one.
I scored my second op-upgrade in a week last Saturday on ARN-ORD (SK) and I must say that the LH experience was far superior in all aspects.
I just booked a F award on LH/SQ for next December - can't wait!!