Here's a link for a Duncan/Methos vid by Elance.
http://www.youtube.com/watch?v=cs_fa2k0BNM A Duncan/Methos and Duncan/Tessa/Ritchie vid here:
http://www.youtube.com/profile_videos?user=eneveration A look at Methos' relationships set to "Hate Me" by Blue October
http://www.youtube.com/profile?user=amberleewriter There are a couple Highlander commercials here
Highlander Parfume
http://www.youtube.com/watch?v=BT15Uo_RaU0 Highlander in a Mentos Tv Spot.
http://www.youtube.com/watch?v=CrQYrDlYY2s&mode=related&search= 2 vids from neodevilbane, one Connor and one Duncan.
http://www.youtube.com/profile?user=neodevilbane A what if video -- What if Duncan had died instead of Connor? It's set to Scientist by Coldplay.
http://www.youtube.com/watch?v=s0kTChzHwHI Misery Whip by Everclear, a great look at Methos/Kronos and their sadomasochistic relationship.
http://www.youtube.com/watch?v=W-U3HZ0NtEQ Ennaejj has one Highlander video "See You" a Duncan/Amanda/Cory Raines (Nicolas Lea) from "Money No Object." There are also has some fab Mulder/Krychek ones by Ennaejj!
http://www.youtube.com/profile?user=Ennaejj A trailer for Highlander: the Movie (not sure if it's fanmade or cannon)
http://www.youtube.com/watch?v=cemyGk4xVuk