I've been listening to a lot of audio books and one that I had a whole lot of fun with recently was Pride and Prejudice and Zombies. It maintains the original plot and characters from Pride and Prejudice, but it inserts a whole lot of zombie slaying/zombification into it.
It's a hilarious take on a classic novel . . . I guess you could think of it as a comedic literary remix. I looked past the idea that this might be a sacrilegious thing to do and just enjoyed myself with the arguments being settled by the edge of a katana and people bonding over the mutual slaying of the "unmentionables".
This novel seems to have spawned a whole range of follow ups . . . Sense and Sensibility and Sea Monsters for example. I'm not sure I'm going to delve any further than the first, however.
I'm getting a lot of mileage out of my Audible (Amazon's audio book service) account these days. I never could get through quite so many books on public transport (motion sickness anyone?) and it means I can listen to books even while I'm walking around etc.