Alan Rickman gives the performance of his career in Harry Potter and the Deathly Hallows: Part 2, according to Radcliffe.
Rickman has played Potions master Severus Snape throughout the Potter movies.
Radcliffe told Access Hollywood: "I'm very excited. I've seen the latest film now and it is pretty spectacular. I really don't think anyone's gonna be disappointed. I think the action is all fantastic.
"I also think Alan Rickman gives what is quite possibly the film performance of his career. He is stunning in the film, really. So yeah, lots to look forward to."
Rickman is considered one of the finest actors of his generation, having starred in movies such as Robin Hood: Prince of Theives, Dogma and Michael Collins.
Harry Potter and the Deathly Hallows: Part 2 is released on July 15.