I may as well de-lurk and announce my dedication to the Steward of Gondor at the same time. I'm not sure what it is about him that I like so much. There's the fantastically fucked up relationship with Faramir (oh, the ANGST!) for starters...but then there's the fact that I've always been completely obsessed with Mad People Who Go Out With A Bang. Seriously, I think his death was perfect, and RotK did it beautifully. That split second when he saw Faramir's eyes open - excellent.
Someone said a few posts down that Denethor was just "boozing it up to take the edge off" - couldn't help but giggle at that. It's what I'd do. "The world is ending? Where's the drink?!" I also like a man who sits and eats a decent Sunday dinner after sending his remaining son off to almost certain Doom. It shows a certain amount of style.
And, y'know, John Noble might have something to do with my fixation. He looks good in fur.