There is a very nice cable out there called a CSquid. They make one for the Streak.
I took an external battery pack which has 2 USB charging ports and plugs straight into the wall on my trip to Vegas. It worked nicely when I tested it at the house prior to the trip. I used it with my Streak on the plane while the wife and I watched a movie. It came in damn handy charging both the wifes phone and mine at the sametime while drinkin way to much playin video poker at the bar.
Then I let the battery on my tablet die. I mean completely discharged dead. So I just plugged it in to the battery backup, plugged the backup into the wall outlet and NOTHING. No charge indicator, no lights on the softkeys, nothing. Tested the USB port with my phone, all was good.
So I ended up buying a USB wall/Vehicle charger at the gift shop of Harrah's for twice what it was worth. Plugged in and the Streak started charging, same stock cable I used with the battery backup charger. After that I was able to use my Streak with the battery backup on the plane ride back home with no problems.
Which lead me to the CSquid cable. It's designed to function off of low powered USB ports. Some device out there, ours included, the Galaxy Tab and the iPads as well, will not charge from a depleted battery state off of some USB ports. This includes PC's if they enter into a low power state. Some ports on laptops for example, my HP has 2 ports that are fully powerd and 2 that are not. A keyboard or a mouse works fine, but try a 3G modem and it detects it, but won't function. Flip the same modem to a port on the other side and it works like magic. What I'm saying is this problem is device specific.
So I recreated the scenario and tested same.
I ran a movie on my Streak until it shut itself off. I tried powering up and it wouldn't go. I plugged my battery backup into the wall, grabbed the stock Streak cable and cabled them up. No charge indicator on the Streak. The battery was dead, dead. Reconnected it twice and the same result.
I then repeated the process with the CSquid cable. I immediately recieved a charge light. This was a good sign. I tried to power it up and it wouldn't go. So I went out to the garage and had a smoke. Came back in about 10 mins later, hit the power button and the Streak booted up. All was right with the world.
If you're in the market for another cable you want this one.
I ordered the cable off Amazon for $20 and some change for delivery. It showed up USPS in 3 days.
This is their site: agreenc.com
Oddly they don't list the Streak on their site, at least yet. But this cable does exist for the Streak.
Like I said I got mine off Amazon. Just search them for Dell Streak CSquid and it'll pop right up