There was tremendous pressure on Hillary tonight, and she absolutely delivered. I've been a Hillary watcher for over 15 years, and that's the best speech she's ever given. Her goal was to convince her supporters to get behind Obama, and she gave them reasons that she knew would work best - the issues she knows they care about.
The media criticized her for not saying more about Obama personally, but that would not have worked. Her supporters are not going to be convinced to like Obama, but they can be convinced to vote for, and even work for, him to assure universal health coverage and other key issues she represented.
I've already seen the effect of Hillary's speech on the Mississippi Clinton delegation. Yesterday at their caucus, all the Clinton delegates indicated their intention to vote for Hillary on the first ballot. This morning when they actually had to cast their votes, about half voted for Obama.
On a personal note, I must admit that tears streamed from my eyes from the moment Chelsea appeared to introduce her mother until after Hillary left. I was very proud of Hillary's speech, but it was also very sad for me to let go of my dream of an ideal woman President - and I doubt there will be another in my lifetime.