This is the third trailer for the new Sherlock Holmes movie, opening on Christmas Day 2009, and starring Robert Downey Jr. as the title sleuth, Jude Law as Dr. Watson, and Rachel McAdams as Irene Adler, and directed by Guy Ritchie. I like Downey and McAdams a lot, but the trailer’s mix of high-impact action and comedy seems like it could be really good or really, er, not good. For my money, Jeremy Brett is still the best Holmes, though I know Basil Rathbone has his fans and there’s an intriguing Peter Cushing version coming out this December. —David