If you desire high-resolution images of the Earth, the good folks at Unearthed Outdoors have made available the 250m True Marble image set for a free download with a Creative Commons Attribution 3.0 license. It's a map of the Earth made up of 32 tiles, where each tile is a 21,000 pixel square, available in png and tif formats. There's also a series of smaller files that may be more useful — in case you don't need a map of the Earth that ends up being 84,000 pixels tall and 168,000 pixels across. Printed at 600 dpi, that's about 12 feet by 24 feet!
Happy New Year! (Thanks, Mikael!)