In comics: The Moderator, reprinted in Doctor Who Classics Series 2 #12-#13, is the best Fifth Doctor story I've ever seen. It's short and sweet, has great monsters (including a giant killer robot with brain damage), and manages a down ending which is brief, brutal, and tells us everything we need to know about the Fifth Doctor without making him seem as helpless and incompetent as he did on the show. (Although there's that aspect -- he fails to prevent a companion's death. That's not a spoiler as it's repeatedly foreshadowed over the preceding stories.)
I think that's the end of Classics Series 2; from a Google search it appears that Series 3 will start with the Sixth Doctor. No word yet on when we'll see the Alan Moore/David Lloyd stuff reprinted.
On Digital Versatile Disc: The Talons of Weng-Chiang is commonly referenced as a fan-favorite episode, so I gave it a look. It probably didn't live up to the hype, but it was still pretty good. It's a Fourth Doctor/Leela story in Victorian England, where they face off against the eponymous villain, who's a gestalt of Fu Manchu, Jack the Ripper, Dracula, and the Phantom of the Opera. The Doctor plays a Sherlock Holmes-y role.
It's got a great setting, sets, and costumes, good characters, and fantastic Fourth Doctor dialogue. The main thing working against it is its stereotypical portrayal of the Chinese -- some of this, like comments made by the English characters, is simply an accurate portrayal of the time the story's set in, but the character of Li H'sen Chang, played by an Anglo in heavy makeup, is damned awkward.
Those blemishes aside, it's a great story, with nice visuals and writing, and one of the Fourth Doctor's best, which is to say one of the series' best.
$15 at Amazon, and given how long it sat on my table before I watched it, I probably spent 2/3 of that just getting it from Netflix. (Of course, I could have just streamed the thing.) Probably cheap enough to warrant a purchase rather than a rental.