Per the official Twitter page of the Denver Broncos:
The Broncos have signed DE Malik Jackson, the second 2012 draft pick to sign with the team.
So that's two down and five to go. A day before, the Broncos took care of Omar Bolden--not in a Sopranos way, mind you, but in a hey, rookie, you can carry these sweaty jockstraps to the laundry room now way.