I didn't think he was an effective communicator at all. He sounded canned and rehearsed, and kept repeating his prerehearsed remarks over and over again, rather than answer the questions he was asked. But to be fair, that is what all the administration officials do in their press conferences.
Bush was pretty damn stiff, and clearly as uncomfortable with the press conference format as he was during the campaign--I saw no improvement in that regard.
As to content, absolutely nothing new--we'd already heard everything he said from his previous remarks or other administration spokespersons this week.
Yawn.
Why we bother with these shams called presidential press conferences, I'll never know.