Robert's best known as Cedric Diggory from the Goblet of Fire which I'm sure almost everyone has seen.
Other key performances to see him in that are available to American audiences:
Vanity Fair, in a small but good part, catch it on DVD in the deleted scenes.
Robert has done several other projects, but they are not currently available on DVD that are compatible in USA players.
Please bear in mind that no one will ever live up to your vision of Edward. As Stephenie has said:
With that in mind, vulgarity and hate mongering is not permitted on the Lexicon (see movie manifesto), posting in this manner will get you booted off the site. Post constructively, if you have concerns state them respectfully. Do NOT PM Alphie, Pel, or any other Administrator or Moderator to complain about the casting of the movie...we are not associated with Summit Films. We have no control over who is cast.No human actor is pretty enough to really pull off a vampire. What we are hoping for here is that magical element of screen charisma that makes all the difference in the world. Example: Pirates of the Carribean. Were you drooling over pretty Orlando? I wasn't. I was taken with the drunk pirate in the eyeliner. Some actors can own any scene they're in. Let's not focus so much on the perfect face (which no one is going to be happy with regardless); let's hope for an inebriated pirate. I.e. someone who can own a scene like Johnny or Joaquin or Jonathan Rhys, someone who will make us forget he's not quite pretty enough to be a vampire.
Here's my wish: that, after we find out who is going to play Edward, my comments page is not awash with "I can't believe they picked HIM!"-s and "John Doe is the real Edward and no one else can do it!"-s and "I hate him! I want him to die!"-s. Can we give him a chance to become Edward? Can we let him try to convince us? I'm keeping my mind open.
In other words PLAY NICE.