"this show might not be so bad after all"
What gave you the impression it wasn't a good show? It has been fantastic from the beginning, it has only been in season three that it has started to grow a bit weak. Season two are some of the best television episodes in history IMHO. But that all depends on what you are into, I fo rone hate sitcom and haven't watch TV regularly since way back in the days of X-Files. Lost is the show that gave me something to look forward to on TV every week, but yeah, the last season wasn't near as good as season one or two. Anyway, if you enjoyed last nights episode (which like I said, wasn't that incredible of an episode) I really think you would like the rest of the show. Best way to see it is to borrow the DVDs off of a friend, if you don't have a friend with the DVDs the second best way to see them is on ABC.com. They currently have every episode from the pilot up to last nights in high quality (seriously, the quality is great) streaming video with limited 30 second commercials. But you have to have decent internet for this. Anyway, I highly recommend it. But in the meantime, yeah, Hurley's episode was in the future. Every episode up until the finale of last season takes place in the past. Last season's finale introduced us to the future, we still don't know how they get off, or what exactly happens, only that as Hurley told us that only six of them get off the island, but as the season unfold we will learn more and more. Hurley (on the island) was not imagining the things in the future, he doesn't know about them because they have not happend yet.
Seriously, watch the show, it is one of the few shows worth wasting your time on.