Here's my "need to watch" list:
Hunter x Hunter, Shiki, Elfen Lied (r), Guilty Crown, Murai Nikki, Attack on Titan, The Labyrinth of Magic: Magi, Another, Fate Xero, Baccano, Ghost Hunt, D-Gray Man, Black Lagoon, Ergo Proxy, Witch-hunter Robin, Monster, Spiral, Detective Academy Q, One Outs, Dragon Ball Super (once more episodes come out... hate watching one episode at a time!)
Here's what I didn't like:
Gundum Wing (too much switching sides, and no real resolution at the end), Death Note (what do people see in this show?), Bleach (again, can't stand it), One Piece (to me looks like a story for children, and I just can't get into the characters, but if you read the plot summary, it's decent), Cowboy Beebop (sorry, couldn't stand the Jazz music - only reason I didn't like it...)
Here's what I liked:
Berserk (original), Naruto (minus ALL filler episodes), Dragon Ball and Dragon Ball Z (although some of DBZ gets disappointingly redundant, but its still better than Kai, and most of the filler episodes are funny), Full Metal Alchamest, Full Metal Brotherhood, Trigun, Code Geass R1 and R2, Gundam (original series)
There's quite literally at least six to eight more series I've watched from beginning to end that I'm missing that I just don't recall atm, but I guess that mean's the series just didn't make much of an impression on me so it's not worth listing here. If I remember them and they belong on my lists, I'll put them into their appropriate categorizes.