1 Happy Hiker - Hiking in the White Mountains of New Hampshire and Maine
Grog's Blog - Lot's of short trip reports for the Northeast, especially the Catskills Region
Hiking In The White Mountains and Adirondacks - The name says it all, LOTS of great pics
Highpointers of Odin - Mostly about the Catskills and Adirondacks, but lots of other good stuff too!
Hudson Valley Hiking - Hiking in the Hudson Valley, Gunks, and Catskills
Mountain Wandering - Hiking in the White Mountains of New Hampshire and Maine
Ramblings - Hiking in New Hampshire and Maine
Section Hiker - Lots of great posts about trails and hiking in the Northeast, as well as info on techniques and gear. I won a pair of crampons!