Harry Potter and the Half Blood Prince is simply spectacular. The visual effects are incredible and the action sequences are trilling.
Alan Rickman and Tom Felton are both given more significant roles in this film. Alan Rickman, as usual, turns in a solid performance as Severus Snape, deftly layering deep emotional complexity under the usual surliness. Tom Felton is stunning as Draco Malfoy. He brilliantly portrays his character's internal conflict at the unenviable task that he has been assigned.
This movie is well adapted from the book that inspired it. All the important plot points are represented in a well paced manner that keeps the action going.