Interesting assortment of shows you've got there. Quite a bizarre mixture actually.

I can vouch for Slayers (especially the TV series) and definitely Di Gi Charat! (One of my all time favorite shows. It's wacky and hilarious)

Queen's Blade and Ikki Tousen are ecchi fighting shows with ridiculous amounts of fan-service. I didn't care for either of them but they have their own following so I guess its a matter of taste. Just figured you might want to know what you're getting yourself into in case you hadn't done much research yet.

High School of the Dead is also on that trail but I've heard the action and events are much more interesting but it's still heavy on fan-service. I imagine it'd be hard for me personally to take that show seriously and haven't tried it.

Jetters was also quite enjoyable but I'm sure you know that since it says rewatch. lol

I've heard of all the others but haven't seen most of them. Of them I'd probably be most interested in picking up Rozen Maiden. That's probably the 3rd or 4th time I've said that in an anime topic. lmao