I might as well group Bleach, Naruto and InuYasha as one anime, since I dislike them for pretty much the same reason - they run/ran for -way- too long. When a show can be classified as more than 50% non-canonical "filler" episodes, that's probably proof you (the directors of the anime) should stop making episodes for a while. Problem is, all three of those shows are/were money spinners for their respective studios - they make enough money from the one series to finance... whatever the hell they want to make alongside it.
Anyway, now that I've got that out of the way -
IkkiTousen (Battle Vixens) - it's Romance of the 3 Kingdoms with more tits and less plot. And, as expected, it's awful.
Queen's Blade - more fanservicey trash from the makers of IkkiTousen. Nuff said.
Gundam Seed Destiny - My only real problem with this show is how disappointing it is. The mecha designs are lovely (and, in fact, some of my favourite units in the Super Robot Wars series when they appear); but the plot is an absolute trainwreck.
High School of the Dead - way too much fanservice for me to recommend this to anybody. It's a cool premise, but it's ruined by the fact they obviously wanted to pander to the otaku crowd over, well, everyone else.
Rosario to Vampire - Again, way too fanservice-oriented. Which annoys me, because the original manga is brilliant and one of the few things serialised in Jump that I make any effort to keep up-to-date with.
Though, honestly, I try to avoid watching an anime unless I -know- there's a chance I'm going to like it. IkkiTousen and Queen's Blade, however, were shows I watched due to sheer curiosity - I knew they were bad, just not -how- bad they were.