
Bill O'Reilly enjoyed a 46% increase among total viewers, to nearly three million, while Colbert enjoyed a 50% increase, to around 1.6 million. The Huffington Post has the whole story, with lotsa good links.
O'Reilly and Colbert will no doubt want to do this again, but there should be other opportunities for strange bedfellows to get together: how 'bout Sean Hannity and Al Franken?