In truth, I wasn't really a fan of Syaoran until the the last episode.
What really atrracted me was the fact that he was willing to confess his feelings and not expect anything back. I was thinking back then, "How many guys are willing to do that? What's more he's 10!" and so I was crushed that Sakura did not confess her feelings to him... Syaoran did so much for Sakura, and as I thought back about the many times he saved her and helped her I knew it was true.
And I instantly became a fan.
Of course, Sakura finally got to do that and I've been a happy S+S fan ever since, but Syaoran was very special. Not just because of his blushes, his jealousy and such (although they are cute) but because of his true love and his determination.
Syaoran-kun daisuki!