this was my favorite episode not just of this season but all of them.
The boy's in the desert where freaking hilarious, and although it may not be the most original of idea's the writing and acting where so good that I don't even care. Raj's rant about being the rabbit king where the highlight of the story.
But stealing the show ( as usual ) where Penny and Sheldon. They work so well together and the result was awesome. Some have found it a little uncomfortable but I am a Penny/Sheldon shipper so I loved it, The 'Soft Kitty, Warm Kitty' duet at the end was fantastic. Though I don't think that they are heading in the direction of P/S, He was just being a good friend.
This episode was fantastic and deserves a 50/10!! :D