I just got my copy of Dark*Matter out of storage in my parent's garage, where it was stored since I moved to California. I like that WotC decided to do a d20 Modern version, though they'll be hard-pressed to make it as pretty as the Alternity book. Anyway, d20 Modern has needed a strong setting/milieu book; Urban Arcana wasn't as bad as many make it out to be, but it was nowhere near as focused and compelling as Dark*Matter. Had they released d20 Dark*Matter instead of Urban Arcana, we might've seen d20 Modern make an even bigger impression than it did.