This guy over at MoDaCo has ported the HTC Desire ROM to the Nexus One and hes done an amazing job.

It works pretty well, there’s a few issues with stuff showing up weird on the screen in some places, no bluetooth problems so far even though its mentioned in the forum post.

It includes busybox and some other utilitys so you can tether it over Wifi, bluetooth or USB.

Heres some screen shots I took today: