I have been somewhat let down by many season 5 episodes but just catching this one after recording it last night I was very pleased with it. I really enjoyed seeing what I would call the "old" Sheldon in this episode. He didn't have any interactions with Amy, which many times I find much too contrived, and he was up to his old Sheldon antics, the thinking cap, the paint ball leader, etc. Penny's and Raj's small affair ended up rather nicely as well. I mainly enjoyed the episode though as I said at the beginning, I liked seeing the classic Sheldon with all his idiosyncrasies and hang ups.
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