Update: A quick search for "nexus one" on Google's Picasa photo service reveals several pictures taken with a camera pegged as the HTC Nexus One in the EXIF data. The very first of these geotagged 2592×1944 pixel (that's a 5 megapixel sensor folks, hardly "weirdly large" as described by TechCrunch) images were taken by user Bradley (who just happens to be a Picasa friend to Sergey... hint) in the SF Bay Area on November 27th. A few are clearly lit by an onboard flash as well. In fact, many of the pics appear to be taken from within Google's offices and at Google sponsored events. The quality is not exactly spectacular and that won't likely change in the final product because even Google's bound by the laws of physics when it comes to tiny cellphone sensors.
Update 2: The device seems to have been around earlier with an EXIF identifier of "Phone88." Fortunately, Google's own employees have uploaded pics of the device, by the device, for us to marvel at -- so meta. Check the gallery for the images or a quickie close-up posted after the break.
[Thanks, Alberto and Aaron C.]