website: http://www.gracecathedral.org/

Re: Christmas Eve services that would appeal to teens
Midnight Mass at Grace Cathedral in SF is pretty impressive if you are looking for an opulent, ritualistic, high church experience. It's not interactive, the carols are played too fast to really allow for singalongs, and you feel very small in that huge church with the big crowd. But it is incredibly beautiful and awe-inspiring. Get there by 11pm if you aren't a member and you want a seat. For carolling and singalongs, I like the Christmas Revels. Not entirely religious, but not completely secular either.
Ginger