Has there ever been a more rapid decent into evil?

Rating: 7/10 (22 May 2005)

Darth Vader, a name that for most people (even with his redemption in E6) is the very pinnacle of evil. George Lucas took him, from basically a shallow egotistical kid, to cold-blooded baby killer in the span of about 45 seconds. I think more time and effort should have been given to this transformation. Would have cost less money than the special effects that fill the bulk of the movie and would have developed the character to make the transformation more believable.
Going to make a ton of money but fell short of what I hope for. I compare George Lucas to Anne Rice. Wrote one great movie and has been making a killing serving up lesser works to its fans ever since.
I debated hard between a 6 and 7 for the rating and finally gave it the benefit of doubt for a 7.