Favorite dollar stores?

Hello all--

My boyfriend and I just moved to PH and we're loving the neighborhood. This board has been extremely helpful throughout with food/drink/laundry/mover recs--many thanks to all of you for contributing to such a wonderful resource! (Thanks especially for the tips about Sister's Community Hardware, the newfound love-of-my-life).

The only thing I find myself missing from my old neighborhood (south slope/gowanus) is the bevy of dollar stores--I haven't been able to find one in PH yet, although I suspect I'm just not looking in the right places. Do any of you have recommendations? Places you love or places to avoid? (For those of you who know the awesome guys at Save on Fifth on 5th ave and 8th street, is there anything comparable here?)

Thanks a lot, everyone!