The Big Bang Theory Hits 20 Million Facebook Fans - Thank You. [5x17] - Sheldon vs. Kripke (Basketball Match) [4x13] - Funniest Science Conference Ever. [3x08] - The Stoner Reduction. [2x01] - Sheldon high on valium. [5x02] - The Chair of Death. [5x02] Internet Kissing. [3x08] - Sheldon's Here. [3x04] - Eye of the Tiger Scene. [1x12] - The Problem With Teleportation. [2x03] - Sheldon gets a date. [3x14] - Ball Pit Bazinga! [5x07] Bazinga Punk! [2x11] - Penny's Christmas gift to Sheldon. [1x11] - Soft Kitty.