Some Sleepers off the top of my head:
Troy Brown - no proven WR2 on the roster, he knows the offense, and he's dependable. PPR league special
Jerricho Cotchery - I like what Ive seen from him. If McCareins fails to live up to billing, Cotchery could take the WR2 spot from him.
Cedrick Wilson - Should be able to take over ARE's deep routes and face little competition for the WR2 spot.
Scottie Vines - was very solid when given the chance to play last year and has some questionable guys (rogers, BMW) as competition for the WR2 spot.
Brian Finneran - Looked like a starting quality WR when Schaub was in. No real standout WR in Atlanta right now.