I suppose now would be a good time to check into this series for the first time, huh?
If you've never been exposed to Star Wars, I'm afraid you're in a really interesting position as you probably have formed some idea of what to expect, and the truth could be either disappointing (not that it should be or that I suspect will be) or well worth the attention and hype. I would definitely say that watching the movies is a good move (I'd recommend watching the movies in the order they were released. Episodes 4, 5, 6 are why people love the universe, not 1, 2, and 3). Playing KOTOR is an especially good move. There is a lot of compelling fiction out there as well. I'd say go for it. I think you can only gain knowledge at this point if not a new love.