I can't say I ever thought of myself as an "extreme" reader, but I grew up in a noisy household with 7 kids, so reading happened in the midst of everything. To me, the best books grab you so strong that you can totally lose yourself in the midst of ANYTHING.
My poor mother would have to yell my FULL name right next to me, because I'd be oblivious. Those were the good old days.
Now that I have Supersonic Mother Antenna, I don't generally get that immersed into a book these days, but I can still block out the world around me when I need to. Makes it dangerous to read on my iPhone in boring meetings