We are counting down the weeks (hopefully) to the launch of Android 2.1 on the Nexus One and HTC Sense phones. Google is putting the finishing touches on the latest Android upgrade and HTC is hard at work updating their Sense UI to work with the latest firmware. For an early look at both updates, we turn to YouTube for some hands on previews.

First we have our friend John from DroidDog with a quick video of the HTC HD2. Even though this is a Windows Mobile phone, it still gives us good look of what we can expect from Sense UI. Also check out that 4.3 in. display (drool) and the impressive Snapdragon performance. I can’t wait to see these features on future HTC Android phones.

Next we have YouTuber Brandon Scott who uploaded a video of a leaked Android 2.1 build running on his Motorola Droid. This is the version of Android we are expecting to see on the Nexus One. The latest firmware offers improved performance and enhanced UI animations. Everything is super smooth and it increases my crave for the Nexus One.