I have been intermittently reading <i>Against the Day</i> by Thomas Pynchon. I am about 800 pages into it out of around 1100 pages. Hopefully I will finish it some time this summer, but probably not until after the bar exam.
If you like <Slaughterhouse-Five</i> then you should read <i>The Sirens of Titan</i>, which is my favorite of Vonnegut's novels.