According to Nielsen Online’s BuzzMetrics Service, Brad Pitt and Kate Winslet have garnered the most buzz so far compared with other nominees in the Best Actor and Best Actress categories with 47% and 46% of buzz volume, respectively.  Brad Pitt has more than double the amount of pre-show buzz compared with Mickey Rourke (22%), who follows Pitt in the buzz ranking, and nearly triples buzz volume compared to Sean Penn (17%).  Pre-show buzz seems to be a tighter race among the Best Actress nominees as Angelina Jolie slightly trails Winslet …