You can look independent of direction of motion using the "spacecraft" movement mode ( key). Set your direction and velocity as you like, then look around in any direction you choose. Stop rotation using [X] or NumPad5, and stop motion with [Z]. You may change velocity as you like with the normal WASDRF keys.
Thx harbingerDawn. so the numpad keys do not change movement? onlu the wasdrf keys do?