Just to help, but ANY 1 Watt Luxeon LED (or similar clone no name white LED) flashlight that has a driver circuit will be a potentially good candidate to host a DVD burner or group buy diode.
Generally you want to look for a single-cell flashlight as that's more likely to need a voltage booster/current regulator circuit. A cheap two or more multi-celled light stands a bigger chance of being direct-drive, or only has a driver for strobe modes and PWM dimming etc. but does nothing for the amperage.
DealExtreme and Kaidomain have several suitable flashlights from the MXDL "Elly" line that would work. Most single-cell regulated/driver 1W LED lights probably put out somewhere around 200-500mA at 3V depending if under load. That's overdriven from the "Daedal circuit" ideal, but if your build goes okay, you'll still get lots of life from your diode when using it to burn and point one minute at a time. And at any rate you're still taking a much smaller gamble than the mini-mag direct drive build. (It seems like the consensus, at least on GB diodes is to try and keep it around 250mA or under. 350mA might kill a diode, but you might get lucky too, from what I've been reading an "open can" DVD burner diode might take 500mA…)
So if you get desperate you could buy any cheap Chinese 1W LED you see, and test it with a multimeter. For the approximate $20 US+ shipping for a Dorcy Mini, you could buy 3 or 4 of the MXDL-types and odds are one of them ought to be outputting something useful to run a DVD or GB diode. You could then just eBay off the others to recoup your money, or perhaps just a simple pot in series with the diode would be enough to reduce the driver output to the useable range.
What I'd suggest is a "thread of interest" that lists suitably driven LED flashlights. Known supplier locations, voltage and mA under load and any notes about construction or ease of disassembly etc. that are good alternatives to the "known Dorcy's" such as the Mini and the (possibly discontinued) Metal Gear.
(editied to get some semblance of the right damn mA's in there
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