Good start with some of the mainstays of the 2000AD label.
Also if you can, track down: "The Ballad of Halo Jones" written by Alan Moore before he sold out and went Hollywood on our asses. It's considered one of the greatest comics starring a female protagonist ever. (although modern mileage may vary).
A name to look out for; if attached to a project you know it's gonna be good, pulpy as all hells and amazingly well written: Dan Abnett, specifically "Kingdom" and "Sinister Dexter".
Kingdom is a post apocalyptic jaunt through wastelands featuring bio-engineered dog soldiers with movie star names (our hero is Gene The Hackman), it also features work from one of my favourite artists and former Sonic the Comic alum; Richard Elson.
Sinister Dexter, is about a pair of hitmen and their increasingly bizarre misadventures, in Downlode City, working for and against the powers that be, installing new leadership and dealing with threats via irreverence and sarcasm, it's absolute madcap genius from one of todays best Sci-Fi authors.
I also highly recommend: NIKOLAI DANTE! an alternate history swash buckling adventure series, the writing can be a mixed bag at times, but this on going series is literally nothing but pure joy to read.
That's it for specific titles, but also look out for collected editions known as Thargs Future Shocks. Future Shocks are short one-shot comics, that feature a twist at the end and many of the best Sci-Fi and Fantasy writers not just in comics, but in film, television, theatre and novels have contributed over the years, including Neil Gaiman and Grant Morrison (yes THAT Grant Morrison.
And that's my recommendation for books without getting into a lot of more esoteric stuff like Atavar... but as you delve into the ranks of more and more 2000AD you'll start to wonder and explore the weirder and darker side of comics, 2000AD was a massive influence on me growing up and still is today, it's stories, dark, silly, sarcastic, satirical, slapstick but always clever. If you decide to get a subscription to the weekly 2000AD also grab one for the Monthly Judge Dredd: Megazine too, Megazine tends to print a lot darker and more mature stories than 2000AD, although the mainline Dredd will always be printed in 2000AD.
And as an aside: if you get into the character of Durham Red, prepare to scratch your head wondering how the fuck 2000AD didn't sure Terminal Reality for more or less ripping off that character wholesale.
Captcha: Hoi Polloi.
I guess that perfectly sums up the 2000AD feel.