A few years back I flew relatively often on the small airline Cimber Air (QI) NRK-CPH and NRK-MUC, and then naturally I had the same cabin crew on multiple occasions, and they recognised me as well. One of them were really easy to spot since she had previously been working in the NRK airport restaurant where I frequently had lunch. One of the pilot's I also remember flying with several times.
Now I regularly fly with KLM Cityhopper, and a few cabin crew members I remember from previous flights, I have yet to be recognised by one of them though.