I remember thinking more than once during that speech that it was so far removed from reality as to be "not even wrong." Jerry Pournelle has been writing about it. Three parts so far: Part 1, Part 2, Part 3. "[W]ind, solar, and biofuels won't support a first world economy."
Ace has a long, thoughtful post looking at Obama's tendency to vote "present," then take credit for whatever happened next, and how well or poorly this approach works for an executive: Obama the Passive-Aggressive Coward.
Obama gives a speech studded with claims about his own "boldness" while punting on all the important issues and only offering cute-sounding, poll-tested anecdotes about the wonders of government intervention. Solar shingles! Fuel made from sunlight and water! High speed trains!
None of these address the central problem this nation faces, which is that we are going bankrupt and in fact stand on the edge of a financial precipice.
It's so much easier to address made-up problems than to deal with real ones.