BestBuy has a Rocket Fish 18inch cable that has two different usb plugs (two differernt micro), one is for the Droid. It says 19.99, but they are charging 15.99 for it right now. I plug it into my laptop dock station and it works great.
Just thought I'd add one note since I purchased a similar Rocket Fish cable from BestBuy that I will now be returning. A sales rep told me what I purchased was both a "regular USB cable" and charging cable. It came with a USB mini cable, and a mini (female) to micro (male) adaptor. However when the USB mini cable is used together with the adapter it charges only and will not allow me to mount for data sync. Interestingly though, when I stuck the mini to micro adapter on a mini USB cable that I know works for data sync it worked fine. Looks like the rep was either misinformed or I got a bum cable (or she was being delibrately vauge with the whole "regular" usb thing).