I have yet to find an anime series that rings absolutely comparable to any of these five. ~

Death Note may seem a bit typical by an early impression, but I think that this series stands as admirably unique and original in the word of anime.

That's one of the reasons why I adore Hetalia so much, it just has such an incredibly clever and unique concept to it.
I haven't seen Rozen Maiden yet, but the others I think are really original as well =)

^I'm new to Hetalia, so I sort of find it to be the weirdest thing on Earth, but I absolutely love it. xD

I love the comedic sense and the lovable characters that it depicts common, worldwide stereotypes through, as well as historical events; honestly, this series is genius. ^_^

^ That's what it was like for me when I first started watching it. XD I found it to be so absurdly ridiculous and didn't know what was happening half the time but I still found it hilarious and fell in love with it. XD The creativity put into it is amazing. I'm glad you're enjoying it :)

Magica Madoka is really one of a kind for me because of how different it is from other magical girl series' and concepts just everything,it wasn't halfly what I expected when I started it,it was so much different than any other I've seen!

Although I'm still new to Madoka Magica,I absolutely love it!Now it's my most favourite anime!My fav used to be Naruto/Naruto Shippuden,but it contains too many fillers and my favourite character was made more annoying than the manga.GO PMMM!XD

Death note for ever also puella magi madoka magica, these were amazing.

Hetalia too, but the design didn't please me much

This is the only one I know and love.

Death Note is probably in my top 5 favorite animes.