I had a little free time this evening, so I made a game.
Go to http://www.literature-map.com/
Think of two dissimilar authors (say, Arthur C. Clarke and Jodi Picoult), and look one up.
See if you can connect your first author to your second author by clicking on the names of similar authors.
Bonus: Your RA skills get a little boost just from seeing the names and connections.