That there should be a list of recommended manga. There are a few circulating, but I think this one is probably best... it doesn't usually have the numbers and rolls (4chan), but the extras are great. Yokohama Kaidashi is also amazing, from the extras.
Basically all of these manga will keep you reading until you're done. I just finished up Living Game today.
Anyway, more things to waste your time. Most series are up on the online readers, and just sitting in the back quietly. This is what manga can be, basically.