Park Slope printer recommendation?

I need to get some full color posters (30" x 40") printed up, and I'd like to have the job done in the neighborhood. Does anyone have any recommendations for a good printer who can work from a Photoshop file? Thanks!

My friend uses Rolling Press - she's a designer at the Bklyn Children's museum. I dont know if they do digital though..you'd have to ask....

http://rollingpress.com

Thanks for the rec - they sounded perfect but it turns out they can't print larger than 20" or so... Thanks again though.

Speaking of printing- does anyone have any recommendations for getting business cards printed?