The Death Note anime has been licensed for 2 years now. It would naturally be a little harder to find.
If you really like it, I would recommend buying the DVDs. The 9th (last?) one doesn't come out until the end of February, but all the others are available to purchase. There's also 5-disc box set available that contains the first 20 episodes. That retails for $70, though I've seen it online for under $44. Amazon has it for $50. Considering each single disc retails for $25 (though again, cheaper places online), it's a pretty good deal getting 5 of 'em for $70. If you like the show that much.
Aside from the 'old fashioned' way of buying DVDs, there are several places where you can actually pay for a legal download of Death Note such as iTunes and
Direct2Drive.
That way, even if you can't really afford to buy the whole thing outright, you can buy any given episode for $2 and say you supported it at least a little.
And that was my rant. Support the stuff you like!