Herringbone will work with both room orientations and give you more visual interest without being too overpowering.

For the bathroom, lay them from the door to opposite the door, just as one would walk in (in a typical bathroom where you enter at one end). If you enter in the middle or have an odd layout, I'd have them go the same direction as the vanity counter runs.
For the kitchen, I'd go the same direction as the cabs and the counters. Across would feel choppy.

Thanks live wire and Diana....we decided on staggered 1/3 pattern (recommended for this size tile on GW) running same direction as cabs...contractor said if they were installing hardwood that's how they run it. After 3weeks of boring plumbing, electric, etc...finally the fun stuff!