Other lenses for m 4/3 video
Depends on what you are after. I have shot video with my E-P1 using a manual focus 38mm Olympus lens for the original Pen-F film camera so I could get shallower depth-of-field than I could get using the kit zoom lens (since the 38mm has a wider maximum aperture). Also, I notice that there is definitely a different color hue with the old MF lenses -- the 38mm has more contrast and sharper colors than the kit lens. Lastly, less about quality but more regards ease-of-use, manual focus film lenses have much smoother focusing and better focus control than most AF lenses.
That said, I have seen other members do really good work using the kit zoom on their E-PL1s (check out Robert Watcher's Edgy Music Video post, for instance).