Sergio Aragones Groo the Wanderer [1985 series]
106 issues [1985 - 1995]
2, 11, 13, 15 - 17, 19 - 21, 24 - 120
This is of course the long running Aragonés (with Evanier, Sakai and (usually) Luth) Marvel/Epic series of the book, which was previously published by Pacific and Eclipse, later published by Image and Dark Horse. I think I began reading it in the mid-50s, and started picking up back-issues as well as each new monthly release. Fortunately before I started buying too many of the earliest issues they began doing the tradepaperbacks of the earlier stuff, so I got those instead (the newsprint on the earlier issues didn't age too well). I also missed a few new issues in the 80s and 90s off the stands, and it's only a few years ago that I finally found those. I'm still tempted to someday get the 14 issues I'm missing, for the letter columns if nothing else, but that feels like such a Groo thing to do (two of my handful of letter column appearances are in GROO, oddly with only one letter).
I shouldn't have to tell anyone that this is brilliant stuff. For those few who don't know, it's basically a parody of sword&sorcery comics, starring the dumbest and deadliest warrior in the world. Lots of great characters (especially Rufferto, Groo's dog), running gags, creative plots and of course that sweet Aragonés artwork.
A few favourites
#47 - The 300% Solution (great use of the supporting cast and Groo logic)
#63 - Real Estate (a Pal and Drumm classic scam, using Groo to affect property values)
#78 - The Book Burners (a nice story with a moral, plus with the familiar looking Weaver and Scribe)
#84 - The Puppeteers (hint, it's about TV)
#94 - Water (wonderfully constructed story)
#100 - A Little Knowledge (Groo learns how to read)
#116 - Early Uno Morning (a wordless Aragonés solo story)
A list of books reprinting some of this stuff is available on Aragonés' web site.