John Joseph Adams, George R.R. Martin, Cory Doctorow, Stephen King, Paolo Bacigalupi, M. Rickert, Octavia E. Butler, Carol Emshwiller, Gene Wolfe, Jonathan Lethem, Orson Scott Card
Vonnegut is a master, but being a huge fan of metafiction, this is one of my favorites. I found the style disturbingly choppy at first, but there is so much wit and wisdom in it, that I eventually stopped caring. A plus.