House of Leaves was really fun. Do yourself a favor and don't read anything about it. Any synopsis gives away too much. Just get a copy and read it.

Check out The Baroque Cycle if you want something similarly sprawling and complex. Stephenson was inspired to write the series while working on Cryptonomicon and it's clearly meant as a spiritual successor.

Man, I love Neal Stephenson. I might have to read Seveneves after I'm done with my current book.