First concert was Shonen Knife, the first still living band I really liked enough to go to see. It was a great concert until certain people in the audience acted like jerks. First they started moshing very roughly with people who didnt want to. Secondly (if you dont know, Shonen knife is a girl pop band like a japanese beatles kinda) the band has a song called flying jelly attack, these same jerks used slingshots to shoot jellybeans at the girls as they sang. The girls actually had to stop and defend themselves from the stinging jellybeans (I know they were stinging because I got hit in the front row and had a welt the rest of the night).
I was able after the show however to send a cd backstage to get autographs. Portland doesnt have the greatest reputation as a small band city, when Pink Floyd came through in the 70's they had all of their equipment stolen.
Hopefully things are beginning to change now.