Heh. Kaylee's my favorite and she was underrepresented in Serenity, so I'm all for anything that gets her more screen time.
Summer never really did it for me... Well, at least not until Serenity. Something about a girl with a sword! (Same with Miho from Sin City!)
No, for me, well, I'm just in LOVE with Kaylee! From the first time I saw her smile where she said, "I love my captain," I was smitten! Seriously though, I thought that she was just perfect in the series, but in the movie, WOW, she lost a bunch of weight. I thought that she was so much prettier in the series.
Still, I think that she gave the best line in the movie: You know which line I'm talking about... Referring to "batteries."
Mark