I enjoyed the plot and for once I feel that a definitive answer was given on this show hahaha.
We find out abit about Ben and where the Others came from. Also we see what happened to The Dharma Initiative. Ben and Locke go to see Jacob which was very strange a bit of a plot twist when Jacob is revelaed.
Overall this episode was very revealing and thats what I like in shows when it is needed. We get to know Ben on a more intimate level and discover some secrets about his past. The flashbacks to Jack were disorientating but its still a great installment and really keeps the pace up. Very dramatic episode.