I've recently acquired a good chunk of the original show online via multiple sources and having watched as much as the first and second doctors available, and the third as well - I can tell you that the show does not disappoint.
I'm watching the fourth doctor now and he's fast becoming my favorite of the original series but thats only because he reminds me of an older Eighth Doctor.
I started liking Doctor Who after the TVM but it would be ten years, after watching and recording that silly little movie, before I actually got a chance of watching Doctor Who. Thanks to the invention of the internet, I caught up on all of NuWho and have bought or download a lot of content.
Suffice to say, I'd love to own all of Doctor Who in one consistent legal format or another but alas... I've had to buy Series 1 twice after watching it the first time straight through and then a dozen times over again that I nearly killed all of the DVDs.
To name a few of my favorite episodes... An Unearthly Child (All of it), The Aztecs, Planet of the Giant, The Gunfighters, Tomb of the Cybermen, The Ice Warriors, The Invasion, The Seeds of Death, The War Games, Doctor Who and the Silurians, Inferno, all of season 8, The Curse of Peladon... are just a few of the episodes I've actually rewatched.
Original Who is actually really good and there is just so much of it that it is nice to watch between seasons of new Doctor Who. The only thing I think the only improvement the new series has over the original series is pacing. Original Who can be really slow at sometimes but it's still just as enjoyable as New Who - if not a little more so because well, it's the original
Yeah, this is my post number 1. I wanted to make it a good introductory post. How'd I do?