okay, enough already

Would someone explain what these two television shows are about, and why they are so endlessly awesomely fascinating to geeks? Thank you.

1. Lost.

2. Heroes.

edit: Okay, I did this on an impulse then went off with read_alicia to go see Perseopolis, which was pretty awesome. 22 comments - I think I should probably have all the explanation I need. Thanks, everyone!