Good for a spoof.
Walk Hard: The Dewey Cox Storyisout now (On-Demand, DVD or Blu-Ray).
This is funny, a few times laugh out loud. And John C. Reilly is real likeable.
But spoofs are boring. I reckon this would be better if they ditched all the homage/spoof stuff and just made a comedy about a musician. I find the spoof aspect predictable. The film ends in an annoyingly sappy way also.
But considering all that, pretty good.