The U.S. Droid doesn't feature multitouch, but the European version does. The Milestone's magical multitouch ROM is up for grabs now. If you're willing to risk a bricked phone, head here for the download and instructions. [Redmond Pie, Thanks Taimur]
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I still don't understand why Google doesn't have pinch-zoom for Maps and other similar apps, especially if the API supports it.