>"the problem with the pancake, I'm not comfortable not having somekind of zoom,"
OK, but here's the thing: all of the currently available native m4/3 zoom lenses are way slow (f3.5-5.6 or 4.0-5.8). So for "photos indoors, like party's family gatherings", you would probably benefit more from an additional two stops (and "zoom" with your feet) than you would from a slow zoom lens. (Plus, this is one situation where the full tilt-swivel LCD could come in handy.)
But to answer your question: Pany has a 14-45mm
but it's only an inch shorter than the GH1's 14-140mm kit lens. Oly has a similar 14-42mm which cuts another half an inch off the length, bringing it down to roughly half the size of the kit, but it doesn't support AFC on the GH1, just AFS. (And not to belabor the point, but the 20mm is even smaller/shorter than the Oly 14-42mm.)
>"i have a 32 gig sd i think its more then enough"
But what will you do if that one card dies? If you're traveling to a big city where you can pop into a local camera/computer/electronics store, then fine. But if there isn't a store nearby (or if the store happens to be out of stock), then your GH1 is now a $1,500 paperweight.
>"any suggestion for a combo ND-UV for my stock lens?"
Given how slow the kit lens already is, I'm not sure why you would want an ND for indoor stills (as opposed to outdoor video). But to answer your question:
Personally, I would go for separate filters over a combo. e.g. a set of Hoya NDs, or either a Fader ND from Light Craft or Vari-ND from Singh-Ray, and then get a cheap UV for when I didn't have the ND mounted.