Ren & Stimpy and Rocko's Modern Life are two of Nickelodeon's best shows, although I don't really enjoy the former. I love the latter but am very skeptical about it. 

Of course, Ren & Stimpy pushes the envelope by being insane and disgusting (although the series eventually started to place FAR too much of an emphasis on gross-out humor by literally anyone's standards, YUCK). I don't really like the series, but I will admit that it definitely has its moments (epic ones at that). Especially the "Space Madness" episode. The series was heavily abused by Nickelodeon but got its DVD support far sooner than Rocko ever did. Very trippy yet unique and entertaining series (at least it was entertaining for a little while).

Rocko's Modern Life has an uncomfortably similar style yet still manages to have its own identity. It is an inexplicably brilliant and crazy cartoon satire of modern-day life; a surprisingly teenage-oriented series under the guise of an average anthropomorphic children's cartoon. However, while I love the show's smart satire and clever jokes, I am well aware that it has a bit too much adult humor and would often not quite be considered "appropriate" for school. But despite not being safe for school, I often refuse to admit to myself that RML is an excellent comedy in its own right. Nickelodeon never seemed to really care about this show at all; the Complete Series DVD set didn't come out until some time in 2013 (which is exactly when I coincidentally became a fan of the series; I'm a lucky b******), and there STILL isn't a completely uncut version.

Which do you prefer? I sadly expect Ren & Stimpy to win, as that show at least had some popularity 

All I have to say is, Happy Happy Joy Joy, Happy Happy Joy Joy! I like Ren and Stimpy better. I remember both shows pretty well but I like the humor in Ren and Stimpy. I almost forgot about Rocko's Modern Life intill this thread. I was thinking about the character the other day but couldn't place what show he was in or really anything about him, to me Ren and Stimpy is just more memorable.

Thank you for giving a decent response. I was afraid that this would turn into another one of those discussions where someone just yelled out "ROCKO SUCKS!". However, Rocko did have a lot of "meh" segments throughout its 2-episode sets. It also had a very bad habit of producing sets where one part of the set is awesome and the other part is still extremely high quality but not great. Examples: Fish-N-Chumps / Camera Shy,?Cabin Fever?/ Rinse And Spit, The Good The Bad And The Wallaby / Trash O Madness, Fortune Cookie?/ Dear John, Spitballs / Popcorn Pandemonium, Junk Junkies / Day Of The Flecko,?Closet Clown?/ Seat To Stardom, Clean Lovin'?/ Unbalanced Load, Wimp On The Barby?/ Yarnbenders, Snowballs?/ Frog's Best Friend, Born To Spawn?/ Uniform Behavior, I See London I See France?/ The Fat Lands, Manic Mechanic?/ Rocko's Happy Vermin, Keeping Up With The Bigheads / Skid Marks,?Turkey Time?/ Floundering Fathers, The High Five Of Doom?/ Flyburgers

I can only name some instances in which I actually loved both episodes in a set or at least liked them almost equally. Examples: Carnival Knowledge / Sand In Your Navel, A Sucker For The Suck O Matic / Canned, Love Spanked / Who's For Dinner, Put To Pasture / Future Schlock, Ed Good Rocko Bad / Teed Off (arguably), Fatal Contraption / Zanzibar, Hut Sut Raw / Kiss Me I'm Foreign, Down The Hatch / Road Rash, Heffer In A Handbasket / Wallaby On Wheels, Power Trip / To Heck And Back, Lounge Singer / She's The Toad, No Pain No Gain / Who Gives A Buck, Rocko's Happy Sack / Flu In U Enza, Jet Scream / Dirty Dog, Boob Tubed / Commuted Sentence, The Emperor's New Joe / Schnit Heads, Sugar Frosted Frights / Ed Is Dead, Pranksters / From Here To Maternity, Hypno Puppy Luv / Driving Mrs Wolfe

Nearly all of the episodes, when you judge by overall quality, are actually pretty "meh" when you think about it, but they have great morals, adult humor and satire. They almost always have at least one spectacular moment that makes each of them pure genius or at the very least highly least highly worth watching when you're not worried about what's "appropriate" and what's not (parents need to stop being so overprotective with that crap).