-Season 1 and Season 3 finales of LOST: Never have any other season finales had me on my feet screaming. The first was excellent, with so much going on at once, but the third was a complete mindfuck and had me cringing while thinking of the one year wait for the new season -Deadwood: The street fight between Dan and Captain Turner. Brutal. -Cheers : Cliff Claven hires a guy to shock him every time he acts like a jerk. -The final montage of Season Two of The Shield. - The X-Files : season 7 two-part episode where Mulder finally finds out what happened to his sister. I never totally "got" it despite repeat viewings, but the sheer emotion of the end scenes really got to me. The show had already started seriously declining in quality, it should have made that the series finale. It would have been a fitting end, not the abomination at the close of season 9.