Here's a frustrating combination: traveling and serious photography. At precisely the time you want to photography interesting new surroundings, you also don't want to be burdened with inordinate amounts of gear.
Olympus has one interesting answer to the conundrum, though: the E-3 (click here for CNET's full-on review). Its top-of the line SLR is rugged, waterproof, and when combined with the company's Zuiko Digital ED 12-60mm F2.8-4.0 SWD and 50-200mm F2.8-3.5 SWD lenses provides a flexible package that's portable if not actually lightweight.