I loved the books, but was so disappointed by the first two movies. The acting sucked in Twilight and New Moon, but Eclipse was absolutely AWESOME.
The writing is better, the directing is better. The love between Bella and Edward grows more accessible by the audience; we can really understand why they are so in love.
Jacob comes in and he is just fantastic. Taylor Lautner totally nailed this character head to toe.
I would totally reccomend it to everyone who has read the books, even if you had lost faith in the movies. Eclipse will dazzle you and have you giggling at Charlie's quirky comments and gaping at Jacob's ripped stomach;)