The problem with Hail Mary passes is sometimes you complete and score a touchdown and other times the ball lands yards away from the receiver. Bringing all the characters together for what felt like a big Thanksgiving episode and then making Penny married on top of all was a big attempt -- and it didn't reach the end zone.
For a show of this age and this magnitude to be this creative and this clever in its seventh season is a remarkable feat. "The Big Bang Theory" is typically far from subtle, and does on occasion wring out its characters for all their worthy, "The Itchy Brain Simulation" proved that it can mine as much humor from inverting its characters as it does in playing them straight.
Bill Nye is the consummate scientist -- with a flair for humor. 'Bill Nye the Science Guy' was born after he won a Steve Martin look-a-like contest circa 1978, eventually showcasing his scientific knowledge on PBS from 1993 to 1998. In case you're not sure where else you've seen him, he also hosted 'The 100 Greatest Discoveries,' Science Channel; 'The Eyes of Nye,' PBS; and 'Stuff Happens,' Planet Green.