There's a few of them.
The following animes were dropped from my watchlist because:
"Pumpkin Scissors"- I've downloaded eps 1-3 but sadly it didn't gain my interest enough to waste my daily bandwith. I also hated the OP song with the guy looking zombie-like and pointing the gun at me.
"Bakumatsu Kikansetsu Irohanihoheto"- I liked the bishie but the story was too Japanese-history heavy that I just got bored watching. Besides I hated the female lead.
"Shounen Onmyouji"- Liked the story, liked the characters but didn't like the fansub.
I'm basically hooked to "CODE GEASS Lelouch of the Rebellion", "La Corda D' Oro ~Primo Passo~", "Death Note" and "D.Gray Man".
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What's more interesting in "CODE GEASS Lelouch of the Rebellion" besides the CLAMP drawn characters is the very obvious advertisement display by none other than Pizza Hut!
EP 01
EP 03
EP 04
EP 05
EP 06
EP 07
The logo's seen in every episode, it's like you're playing "Where's Wally?" trying to find where it'll appear next ^.^
So as the saying goes: "Pizza Hut supports the rebellion!!!"