Shows random bursts of ingenuity as well as packing a substantial amount of variety. Every episode improves in comparison to the previous.
Cons: Still finding its feet. The concept is rather murky and hasn't reached it's full potential yet... and it may not even get the chance to.
If you remain committed to the concept, Lost delivers a well thought out and interesting show. It's picked up pace since Season 3 and literally hit the ground running.
Cons: Season 3 sharply dipped in quality and watching it became a chore. It's recovered greatly since.