My favorite "mummy" film to date is The Mummy(1959), a Hammer Films production starring Christopher Lee in the title role. Lee has no speaking part and wanders about while carrying out a methodical, murderous rampage against the unfortunate victims of this movie. Despite no spoken word Christopher Lee is marvelous as the menacing mummy and is terrific at conveying the mummy's intentions through body language and posture.
The film's trailer: