So...is it worth watching what was made before it was cancelled?

I thought Forlani was great, so I'm sure you'll like it, even if just for her. As for the Arthurian content: it will probably not be what you grew up with, so it really depends on what sort of Arthurian fan you are: if you want YOUR story, so to speak, you'll be disappointed. If your curiosity is procked by the twists and turns modern writers put on the medieval material, then there's plenty you'll like in that series.
Of course it's frustrating that it's just a couple of episodes, several cliffhangers, and no ending. Personnally, I thought the most frustrating part was the horrible writing of what episodes and characters we do have. A lt of things, in every episode, do not make sense, appear rushed or coming out of the blue, and the characters are inconsistent and two-dimensional (for the most part). It gets on one's nerves after a while. But there's still plenty to enjoy, especially if you don't set your hopes to high to begin with (that was my mistake; I had been really looking forward to an epic Arthurian TV and was sooooo let down). I'd suggest you give a try to the first htree episodes and see if you like it so far.

"Occasionally I'm callous and strange."

Hmm. I came to this board to ask the same thing. I saw the first two episodes, and it was interesting and annoying on the same time. Author's claim of Camelot over Morgan's seems to boil down to being male. I know she's supposed to be evil, but she seems to be responding to being screwed over. Merlin also seemed to do nothing to help her while he made sure Authur was sent to a good wholesome family. Author seems kind of sleazy anyway. He slept with his brother's girlfriend. Then he seemed to be going after the wife of one of one of his loyal knights. I like the way he got the sword, but I basically feel like I'm being told he's a great ruler while every other character seems like he or she would be better. Does it get better from there, or is the rest of the series more of the same?
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Malek: It is essentially an asexual process.
O'Neill: That why you guys take hosts?
Stargate SG-1

Basically, if you're a true fan of the King Author story, then you'll watch it despite the acting, writing, and casting of Author! If you can get around that then its fairly enjoyable!