Its almost like they tried to top the greatest Lost ep of alltime (S3f) with the Season six finale
Season 3 finale: last few minutes reveal the nature of the flashscenes seen recently (flashforward) A
kills off fan fav in a beautiful scene (charlie) A
Season 6 finale: last minutes reveal the nature of the flashscenes seen all season long (afterlife) A+
kills off fan fav in a beautiful scene (island jack + church everyone) A+
only thing season3F offers to counter season6F is that it introduced the new , sick idea of,
wanting and needing to come back to the island,
after the first 2.9seasons were spent on the idea of
wanting and needing to leave the island and be rescued.
so , in conclusion, i have a dead heat between S3/6F for the greatest lost of alltime.