Whatever they do, Radcliffe, Watson and Grint can't put "Potter" behind them just yet. All have signed on to be in the final two movies, due out in 2008 and 2010, with Radcliffe banking a reported $50 million for his starring role -- enough to ensure he never has to act again.
But while Radcliffe has tried to separate himself from the bespectacled boy wizard, Watson and Grint haven't taken other high-profile projects. In 2006, Grint starred in the coming-of-age movie "Driving Lessons." Watson has yet to have a major role outside of J.K. Rowling's realm.
Thompson speculates that while all three may not remain household names forever, some Potter fans will follow them to their future projects.
"The blush can come off that rose," he said. "But my sense is that there will be people who will follow these characters into one or two of their next movie roles not just because they're fans of the characters but because they're fans of the actors."
Sue Upton is one of those fans. The senior editor of "Harry Potter" fan site The-Leaky-Cauldron.org said she won't ignore the actors after the final "Potter" movie hits theaters. In fact, she laments missing Radcliffe in "Equus" and hopes to see him thrive as an adult actor, whatever he is (or isn't) wearing.
"I'm going to follow him. He embodies Harry Potter, but he will not always be just Harry Potter," Upton said. "You have to let him grow up."