The Batlord's Top Ten Most Righteous Comic Book Discoveries of the Past Year
9. The Ultimates 1 & 2
First Series: March 1, 2002 - April 4, 2004
Second Series: February 1, 2005 - May 16, 2007

Honestly, I could have switched this entry with
Injustice. This series is better written, but
Injustice is just so massive and the world so fully-realized. Eventually I just had to say "**** it" and not worry about banging my head against the wall trying to rank them.
I already did an in-depth review of the first series, so I'm just going to post a link to that out of laziness and a lack of desire to be redundant. Unfortunately I'm only about halfway through the second series, so I'll refrain from reviewing that... also partially out of laziness. There's also a third
Ultimates series, but I've heard nothing but terrible things about it.
Link to The Ultimates 1 review.