If you want a bike actually designed for touring, as opposed to longish day rides - Trek 520s and 720s, Miyata 210s, 610s and 1000s, Fuji made a couple - not sure of the models, Raleigh Portage & Alyeska, and there are definitely others.

If you're just looking for an all-day rider, just about any sport-tourer that fits you well ought to work.