not denver, but if you head up to conifer at the high school there is a nice one by the soccer field, it was in the credits of turbo when some guy (couldnt tell who) totally wrecked himself on it, and in the refresh trailer. its nice, during my free periods my friends and i would go hit it, hoping for more of that this winter...
and in golden by clear creek there is a prime dfd, and another down flat to wall drop kinda thing. evergreen there is one by the king soopers (my friends and i were on the news for hitting it last year/claim) and a few more scattered around. and behind southwest plaza mall there is a super nice 3 kink (dfdf)...
i got a bunch more but dont feel like writing them all.