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Check to make sure the bolts on either side of your top A arm are tight and not allowing it to move. There will be a bolt, washer, and rubber bushing on either side. Something has to be loose in that area to make that noise.
Like mentioned, check the bottom as well.
Well I think I fixed this problem - and sure enough it was simply a very loose lower control arm bushing bolt on the passenger side. I could turn the rear bolt by hand. Tightened it up and I think I'm good to go.
Another plus, I also checked all my ball joints as recommended below, and confirmed they were good.