Who likes this series? I only started watching it this week but I found it very well done and enjoyable. A nice balance between action and character development.
Now some random thoughts:
1) I got into this anime completely backwards. I was doing a search for something else on ebay when I came across the 1/6 Saber action figure with metal armor and sword for $450. Luckily I was able to find another for several hundred less. Very cool, but that got me to wondering what the heck Fate was.
2) A lot of the characters remind me of characters in other anime/games. Rin is a bossy overachiever like Asuka in Evangelion. Illya is a precocious aristocratic girl who gets a childlike crush on the hero, much like Iris in Sakura Wars. Most of all Saber reminds me of Lenneth in Valkyrie Profile. In fact most of the characters could be easily transported in that game.
3) I seriously love the interaction between Caster and her master (SPOILER)Soichiro. It's the coolest example of 'evil love' I've seen since Ashram and Pirotess in the original Record of Lodoss Wars.
4) The only thing I don't like so far is the late appearance of (SPOILER)Gilgamesh in a classic deus ex machina style. I found his grand entrance annoying.