Couple years ago, I heard Airline xxx on the CHINS into SEA with Seattle Center. Conversation went roughly like this...wish I could remember the airline.

Airline xxx: Seattle, question.
SEA CTR: Go ahead sir
Airline xxx: Yeah, we're not from around here, and we'd like to know which mountain is Mt. St. Helens. We'd like to point it out to the passengers.

Without missing a beat, an unidentified voice gets on freq and says: "It's the one with the top missing"