I can't stand complete silence. If I'm home alone and reading, I have to turn on the TV, radio or listen to music on the net. Complete silence is actually deafening to me and more of a distraction than any TV show possibly could be. I hear every creak or little sound and it freaks me out for some reason.
I can listen to just about anything in the background while I'm reading. The most common, if it's of my choosing is the TV tuned to XM's classical station. However, I have been known to read during ballgames (when my team isn't playing), sitcoms and, most prominently, one of the Discovery/Science/History channel documentaries that the hubby enjoys. Unless the topic really interests me, I can tune out just about anything.
I will say that having someone talk to me distracts me since I don't wish to be rude, but cannot listen to their conversation and read at the same time. Fortunately, this doesn't happen very often since the hubby is aware that I'm lost to him when I'm entranced in a book and will only talk to me when the topic is of utmost importance.