Kikoskia has probably the most famous LP of X-Com of all the time. Although he is not a very good player, his charm and theatrical communication is what carries his LPs forward, usually with his lack of skill and tactics frequently provoking many hilarious accidents that add to the tension and fun.
So far, he did a VERY comprehensive introduction of not only X-Com but also of the features of OpenXcom itself. The only thing I regret so far is that he is not using the original resolution (odd for him, since he tends to be purist), which kind of makes the Geoscape in particular look weird.