two things, mildly useless
1. 
Draw your own conclusions, because I sure as hell don't know what mine are yet.
2. I have a steadily more burning desire to write Highlander fic. Goddammit. At least Doctor Who has cured me of my conviction that I need to have a comprehensive knowledge of the canon before I write in the universe? I'm still pretty sure, though, that by "write Highlander fic" I mean "write hilarious fic about how Methos is four millennia older than the Doctor, so there." I don't even know, guys.

Draw your own conclusions, because I sure as hell don't know what mine are yet.
2. I have a steadily more burning desire to write Highlander fic. Goddammit. At least Doctor Who has cured me of my conviction that I need to have a comprehensive knowledge of the canon before I write in the universe? I'm still pretty sure, though, that by "write Highlander fic" I mean "write hilarious fic about how Methos is four millennia older than the Doctor, so there." I don't even know, guys.
Re: jumping in randomly to say this
As to the actual source material, at least the way I did it, it's not a huge drain on your time. I mean, yes, Highlander is a six season show, but I did The Methos Watchthrough, and that's twenty episodes + whatever bit of wiki reading needs to be done to fill in the gaps between.
Which is not me helpfully letting you stay out of this fandom! But Methos is worth it. XD
Re: jumping in randomly to say this
(the 2000s.... well, I think I generally hear them referred to as such, actually. Though that's awkward since it can also refer to the century or the millenium. The other thing I've heard is the "noughties", but I'm pretty sure that one's only suggested facetiously. There's no good name for it! Although -- what did people call the first decade of the 1900s? Perhaps we should take a cue from that, whatever it was.)