@George,
Best Irish Pub (most authentic seeming):
I used to go the the Black Rose a lot. The Kinsale is also cool.
Add Black Rose is closer to authentic than the Kinsale - really authentic you gotta go to Southie
I can't speak for authentic.
Most dangerous neighborhood:
Roxbury - agreed - but there is much reason that you would go there.
Most Boston-y sight, building, thing to do:
The Freedom Trail, Beacon Hill, but that's outdoors. I have several
interesting (to me) walks I recommend to visitors, if you're imterested.
Why the **** are Bruins tickets so much: (fume)
. . . or Cletics, or Red Sox. The last Red Sox game I went to was in
Toronto. (Hi Beth Setanta & JoeBlow!)
You could try to get tickets the day of the game - sometimes they release some extras - be less than a ticket agency -
Best seafood or Italian restaurant
I love Legal Seafood or -- in Cambridge -- East Coast Grille. You can try the new Legal's in Seaport area - really great spot - although it could be crowded.
Funkycool Bostonian experience?
Alas, I am neither funky nor cool. Ice skating on the Frog Pond is really cool (and cold so dress warm).