So I just started Stephen King's "The Dark Tower" series, which Lindelof says is one of his favourites.
Anyways, i HAVE been noticing a lot of parallels, but the most significant one so far (I'm only on book 2) is two brothers named Henry and Eddie Dean.
They act very similarly to Liam and Charlie. Eddie is the younger one and when we are first introduced to him he is actually going into the bathroom in an airplane to do Heroin.
Henry refers to him as "little brother" has Liam did to Charlie.
I just thought that was kind of cool :) And I'm beginning to see how Lost may have even begun as an idea in the mind of Lindelof and all the other creators on the show :)