In the cartoon-type parts, that innocence is essential, but it works just as well now that he's an action hero. In The Mummy Returns, his light-hearted approach to the character is one reason the movie is so much fun. Another asset appears to be lucky timing. His last two films, Bedazzled and Monkeybone, were neither artistic nor commercial successes. But those will be forgotten in the wake of The Mummy Returns.
All actors seek the freedom to choose a variety of roles.
Fraser has it and has made the most of it.