Canadian actress Rachel McAdams first came to the attention of U.S. audiences playing a pair of uber-bitchy teen queens in “The Hot Chick” (2004) and “Mean Girls” (2004). Audiences were understandably surprised by her effectively heartwarming performances in the sentimental romance “The Notebook” (2004) and as a likeable girl-next-door in the mega comedy smash “Wedding Crashers” (2005). The sometimes blonde, sometimes brunette, sometimes pink-haired actress enjoyed roles just as unpredictable as her appearance, delivering all of them with the same sparkling panache as her flair for personal