Megavirus chilensis takes current award for biggest virus

From Oct 10, 2011 issue of PNAS

http://www.pnas.org/content/early/2011/10/04/1110889108.abstract

isolated from the sea near Chile, somewhat related to the prior record-holder Mimivirus, contains 1120 protein-coding genes, 1.26 Mbp of DNA, and size of ~0.2-0.3 uM

(image from geekosystem.com)