Mawaru Penguindrum is by far my favorite anime this summer season. Starting now I will only watch anime on Saturdays/Sabbathdays as I am finally starting to 'get a life' I'll have to be more specific in what I actually want to follow, because I can't do everything I want to, there simply isn't enough time, so I have to prioritize.
Dantalian no Shoka is what I'm currently following (along with the other 200+ things in various queues!). If you like your anime with lots of supernatural goings-on and books (always books!) this is a good one.
Yes I am a fan of Takahashi. I collect as much as I can of hers. Yes actually I have read and watched Maison Ikkoku and I like it as well.
There's so many favorites I could list. I thought I'd keep my list small to start. :)