Have recently had a Walking Dead glut by reading the three compendiums more or less back to back. On the whole I liked it but I was disappointed that certain elements about the zombies (e.g. in different states of decomposition, hive behaviour) were not developed further. Also, though this is possibly down to the fact I read so many at once) I do feel it's dragging a bit. Sure, they jumped forward some years at one point, but I get the feeling that it needs to either go in a new direction or wrap up - though presumably there can be only two endings (everyone dies, or open ended with the characters walking off into the sunset).
I also enjoyed the first 40+ issues of Invincible. A fun comic.
Before that, despite being a Grant Morrison fan, I was disappointed with his run on Action Comics; I thought he was trying too hard to be, well...Grant Morrison. I did like his run on Batman which I'd just finished.
And before that, Alan Moore's run on Swamp Thing which was excellent.
There are more omnibuses on my shelf waiting to be read (I buy them as soon as I see a good deal, even if I know I don't have time to actually read them) such as Deadpool, The Avengers (1-30) and Doom Patrol (years ago, I bought almost the entire Grant Morrison run before he was GRANT MORRISON for just pennies each (it must have been shortly after they were published) - at the same time I also got a big run of Shade the Changing Man, again for pennies, which is surely due the omnibus treatment.
I'm currently waiting for Gary Spencer Millidge to finish Strangehaven which after a loooong hiatus he seems to be doing.