Well, maybe not the whole series. None of the other books matched the action and intensity of Ender's Game. I liked it so much I read it three times.
Speaker For The Dead was so introspective, maybe too much so to really translate well on film. Ender's Shadow was, through a large section of the book, just a retelling of Ender's Game from a different perspective, Bean's.
But I do hope that Ender's Game gets made and is as faithful as possible to the book and not ruined on film like what happened to Battlefield Earth.
Another good series to put on film would be the Stainless Steel Rat series.