ONE HUNDRED! WOO HOO!
Anyway,
While the crew is not necessarily the same flight after flight, you will begin to recognize (and be recognized by) crewmembers if you fly AS a lot, regardless of the flight. I fly from SEA to BOS, WAS, LAX, and SFO once or twice a month and have gotten to know some of the folks who are likely to appear on any of these.
And they're consistently the friendliest crew of any of my routes.
-alan in seattle