Names of episodes for Lost season 5 so far:

1) Because You Left
2) The Lie
3) Jughead
4) The Little Prince
5) This Place Is Death
6) The Life and Death Of Jeremy Bentham
7) 316
8) Lafleur
9) Namaste
10) He's Our You

This is taken from Wikipedia- please note; be careful what links you bring up at the bottom of the episode page for this Wiki article especially if you are trying to avoid SPOILERS!!!!!