After about, oh, 100 or so tries, I finally beat Bark at the Moon on expert last night to get through all the songs. I am now a certified rock legend, and I have the battle axe guitar to prove it. I don't think Mrs. Skinypupy was terribly impressed (I think I detected an eye roll when I leapt off the couch in triumph), but I felt a sense of accomplishment that I haven't had from a game in a long, long time. Made me realize (for the umpteeth time) how damn good this game really is.
I think I probably only hit around 70% of the notes on BatM and finished about one step away from being booed off the stage, but at least it's done. I will now sit back and bask in my plastic guitar glory while I eagerly await Guitar Hero 2.