IGN - Sorry this review is late. As I noted last week, I'm just returning from a vacation in sunny Orlando, where I traipsed through the Wizarding World of Harry Potter, had my mind blown by the Blue Man Group and indulged in the joys of Walt Disney World. Ironically enough, I arrive back just as Sheldon is forced to go on a vacation. Once again, The Big Bang Theory seems to be in a transition of sorts, unsure of how to move the characters forward, leaving yet another mixed bag episode. On one level, "The Vacation Solution" is interesting, but for those who've longed to see a more classic return to form, you'll probably find disappointment ahead.