I talked myself into it. Ack!
After seeing user galleries from here, and some sample images I was just amazed at what this G3 can do. Being new to photography (digital and non), I have a lot to learn.
After browsing here, I went ahead and ordered the lensmate 52mm adapter, a hoya double coated linear polarizer (everyone seems to say this linear will work fine), a hoya uv filter, and while I was ordering I got the 52mm wide angle lens hood from lensmate as well - not sure how much I'll use the lens hood, but given the overall price of everything else it was $9 that I was willing to gamble.
This should hopefully cover everything for now.
It seems like that 420ex flash is a must have too - can someone explain why and if a novice like me can actually utilize these benefits it provides? I'll try the search option too since I'm sure it has been covered, but if someone has the time and doesn't mind, a reply here would be great too.
This forum has been a great help - thanks.

