It took me awhile to get into this series. In fact, after watching the two-hour premiere, I almost didn't come back to watch Ep. 2. But I did, then I watched Ep. 3, and I think that's where I finally started getting hooked. Unfortunately, ABC has now put out official word that they have cancelled the series, though they will show all the remaining episodes (while based on a miniseries, King had begun writing material for a second season, which ABC has now axed). Thankfully, ABC has agreed to release the series on DVD later this year.
I've most enjoyed the episodes where you see a lot of the ghosts. I think Jodelle Micah Ferland (Mary) is just adorable, she just breaks my heart. I'm really impressed by Kett Turton (Paul and the voice of Antubis). This is the first thing I've seen him in and I think he's great. And I just love Diane Ladd as Mrs. Druse. In my opinion, the episodes in which those three figure the most prominently are the best of the series.
Unlike many others who watch this series, I have not seen Riget so I have nothing to compare Kingdom Hospital with. I do plan to see Riget (my local Blockbuster actually carries it, under the title "The Kingdom"), but I think I'll wait until this series is over, since those who have seen Riget first seem the most disappointed with this new rendition.
Definitely bizarre, but it grows on you. Stephen King stated that viewers might not see the rewards of this show right away, but if they would just stick with it they would. It's too bad that more people didn't listen, or it might have survived.