Pretty much any BM video is fucking ridiculous...all image and shit...but the worst videos are by far anything by Manowar. Laughable. And Cradle of Filth is up there. And while we're at at it, does anyone remember how embarassing Electric Crown must have been for Testament? Ughhhh......Mother North by Satyricon is pretty horrible. Most black metal artists would be better of doing a live performance video, instead of the "evil image" videos. All of Six Feet Under's videos suck (but hey, so does this miserable excuse for a band).
Also Opeth's video for Serenity Painted Death, with the choreagraphed dance moves, leather outfits and mobs of teenage girls? j/k of course............
and Morningrise, Carcass' video for No Love Lost is excellent, so check that one out...