Craigslist RULES! I'd say the vast majority of the furniture we own that falls into the "super-cool" category (Saarinen coffee table, Danish bar with Eric Buck stools... and now the Hans Olsen table and chairs!) has come from Craigslist.
Our latest purchase is this fantastic dining table by Hans Olsen. The chairs are three legged and fit neatly underneath the table... the chair backs becoming one with the bottom border of the table.
For an added level of fun kitsch, the table came with a vinyl/board cover in its original box that even included a receipt from 1963!