Apologies about the long post. Since there's people who feel uncertain about whether to get into Futurama comics or not, I thought I'd defend those comics a bit.
WHAT THE HELL, Who approved this?
He can't even draw a supporting character's hair right.
Fun fact: back when they were making season one of Futurama, they apparently planned to have Cubert look like that. There's this screenshot from a season 1 DVD featurette.
(Those are colour tests; they were still looking for good colours for all the characters, and that's why colours are all weird in the pic.) Cubert's concept was there straight from the beginning but they couldn't fit him in season one, so he came in later on, with a different hair. Anyway, one thing I find really puzzling: how on Earth did the artist of that comic obtain such an ancient reference sheet of Cubert, and why? At the time when that comic was printed, Cubert's looks had been established long ago, and you don't usually spread early concepts everywhere. I always thought that panel of Cubert's early looks was hilarious and odd.
(Btw, notice in the screenshot that little thingie that's smaller than Nibbler. I think it's the Pocket Pal. He's mentioned in the commentaries of "Less Than Hero" and BWABB.)
So anyway, enough random sidetracking, I'll talk about the comics now.
I started reading Futurama comics after I'd seen all Futurama episodes. I had this desperate need to get more Futurama contents, so as soon as I found out there's Futurama comics, I looked them up. And my feelings of them are highly positive.
Issues 16-19 (or "The Time Bender Trilogy") make up a continuing storyline, but other than that, all the issues are standalones and it doesn't matter if you read them out of order.
The comics have been printed all the while as the TV series went on, and a couple of things change as TV series introduces new elements. For example, in the first issues Amy is a slut, but as she later becomes involved with Kif, the jokes about her shallow relationships stop.
There's a bunch of references to the episodes, and those references are always amusing. There's also some things that contradict with information known from episodes. But for me, Rule Of Funny overrules everything else and I don't mind contradictions. I've understood that these comics are out-of-continuity and not canonical. They're just fun things to read but you don't have to take them too seriously. I take them like that; fun, light entertainment.
About art: from what I've seen, Simpsons comics appear to have a lot more steady art quality, and there's some basis in complaining about Futurama comics art.
I feel that issues pencilled by Tom King and James Lloyd have very enjoyable art to look at. John Delaney draws in a style that looks a bit odd for Futurama. He uses a lot of shadows and some odd expressions. But I loved a particular DC superhero comic he used to do years ago, and I enjoy seeing more of his art, even if his style's a bit odd for Futurama.
Then there's Mike Kazaleh whose art gets a lot of flak. *shrug* I can see a lot of flaws in his art but the stories are still enjoyable, and I don't let the art bother me too much. If the story gives me entertainment and if the jokes make me smile, I don't feel like going all hatehatehate about the art.
The comics have pop culture references and other humor in Futurama style. As in the TV series, there's some jokes that only certain kinds of nerds will get. Like for instance, the last issue's Speed Force Burgers fastfood place had some cameos that gave a lot of amusement for a superhero fan.
There's also some Simpsons/Futurama crossover comics. They make up a big, continuing plot and the issues have to be read in the correct order so that the story makes sense. I feel the plots of these crossovers are not as satisfying as normal Simpsons or Futurama comics. But they still have a lot of funny scenes, and I get a lot of kicks out of seeing Fry/Bart, Lisa/Leela and Mom/Mr. Burns team-ups. Plus the art's looking good.
People outside of US, UK and Australia will very likely have trouble tracking down Futurama comics. I don't know if they're being translated to other languages than English. So these people will probably have to resort to online stores, and try to purchase their comics from across the sea.
Unlike other comicbook publishers, I think Bongo doesn't publish free previews/sneak peeks of their stories? That's sad, since previews could get more new people into reading their stuff. But you can see some scans of their comics over here
to get a basic gist of their humor. (That's a comic fans community where people post short story snippets of comics, trying to advertise their favourite comics to other people.)
My opinion summarized: even if Futurama comics get some criticism, I feel that some of it is just nitpicking fanwank. People who are unfamiliar with Futurama comics shouldn't get too discouraged by the criticism they hear; they should try reading Futurama comics for themselves, and see if these comics appeal to them personally or not. In my opinion Futurama comics are well worth checking out, even the ones that have sucky art. As all the issues (except #16-19) are standalones, it doesn't matter that much which issue to pick as an introduction. My personal favourites are issues #11, #38 and #42. And what Atilla said about #14 and #20 is true, those issues had some really clever and unique narrative tricks.