Great idea!

1. Pilot
2. Live Together, Die Alone
3. Through the Looking Glass
4. Confirmed Dead

I gotta admit that was a really tough decision, especially for season 3 (I have many favorites from that season). similzy, what are yours?

Wow, someone actually replied!
Anyway here is my list:

1.Walkabout
2.Live Together Die Alone
3.Through The Looking Glass
4.The Shape Of Things To Come

Good idea, although it's quite difficult but if I can only choose one from every season this is my list:

1.Walkabout
2.Live together, Die alone
3.Through the Looking Glass
4.the Constant (very hard, I also love the Shape of Things to Come)

1. Pilot
2. Live together, die alone
3. Through the looking glass
4. The constant (or the finale)

1. do no harm
2. the long con
3. i Do
4. there is no place like home

Since there are more seasons now I'll do my top 6 episodes from each season

1. Dues Ex Machina (such a pivotal moment in the series.)
2. Adrift
3. The Brig
4. The Constant (I think a lot of people like this episode)
5. Whatever happened, happened
6. Happily Ever After

1. "The Other 48 Days"

2. "La Fleur"

3. "Through the Looking Glass"

4. "Exodus, Part I"

My favorite characters are Sayid, Desmond, Locke, Richard, Ben, Daniel, Charlie, Jacob, and Miles! Here are my six favorite episodes. One from each season:

1. Dues Ex Machina (I love Boone)

2. Live together, Die alone (I love Desmond!!!!)

3. Through the Looking glass (I love Charlie!!!!)

4. The Constant (I love Desmond!!!!!!!!) See ya in another life brotha!

5. Jughead (I love Daniel!!!!!!!) I love the Variable too! It's hard to decide!!!!!

6. Ab Aeterno (I love Richard!!!!!!) I love Espanoil!