I haven't read that in a long time, but Last Exit to Brooklyn is amazing, and yes, heartrending and at times painful to get through.
I recently read Dennis Cooper's Guide. It is like Britpop fanfiction gone to transgressive lit hell! It's repulsive and hilarious all at the same time. A very brief read, I think I finished it in the space of a few hours.
I'm also finally on the third book of George R. R. Martin's Song of Ice and Fire series. I have really great friends who have been lending me all the books, so when I finish one and the suspense starts to kill me, I never have to worry about waiting too long to get the next.