I live in Benton, PA a little north of Bloom, and so I definitely say that Rickett's Glen State Park is a must see. Also, one area that hasn't got much attention is the Union County area. Lewisburg, like Bloomsburg is a college town, so it has it's own great bars/restaurants worth checking out if you're headed that way. It's definitely an area worth considering. I like taking rt. 254 west from Benton to get there from my house. The views along this road are incredible (minus the power plant).
My favorite place to visit out there and a real hidden gem is a place called T&D's cats of the world. It's an exotic animal sanctuary located in Penn's Creek. All the animals there, including lions and tigers used to be people's pets, a lot of the personalstories of how the animals got there are incredible. The website is www.tdscats.com there are some nice rides out that way.