On AI last night:
The judges seemed to have decided what they were going to say before the show started.
First, and least -- Jasmine was outclassed all night. Nothing she sang was remotely in the same class as the other two competitors.
Second -- Diana deGarmo's first song was a knockout. I know it, and the audience who she sang it to knew it. Randy gave one of his patented "bleh" responses, and the litany began, one after the other, as well-rehearsed as the singers. Simon felt compelled, however, to tell Diana to ignore the audience (i.e., the folks who would be voting and, potentially, buying records -- Simon has no regard at all for the public).
Fantasia was pretty good each time, although I thought her second song was far and away her best performance.
Diana has a greater range, and is far more flexible in the various musical genres, than any of the contestants we have seen.
Fantasia has a unique voice which makes it "seem" like she's doing unique takes on songs, but I'm not convinced anything she did last night was any more unique or original than Diana.
As MattH has said, the judges decided to do their annointing last night.
Unfortunately for them, the most vociferous was Simon, and backlash usually ensues.
Bottom line: It ain't over til it's over. There's one more week of competition and we don't know who will be competing.