Your lists made me think of movies that I (and often my daughter and I) love but know are neither great nor universally or widely loved.
El Topo
Point Break (MY daughter and I watch this whenever it’s on)
Ghost Dog: Way of the Samurai (We own this one)
Thunderheart (We watch it over and over and especially love Graham Greene)
True Romance
The Salton Sea
Philo
I just dassn’t tell ya. Dubhlinn might see the post. 
Bill and Ted’s Excellent Adventure
Bill and Ted’s Bogus Journey
California Man (“Ow, my pancreas…”)
Nightbreed. I always watch it when its on TV.
That Thing You Do
Tin Cup
Better Off Dead
Office Space
Wierd Science
Real Genius
Top Secret
Hmm.. time to fire up the ole DVD player tonight methinks
Be excellent to eachother, and party on buddhu 
Rat Race 
Mary
should have bought a squirrel
Strange Brew (Bob and Doug McKenzie, eh)
Brazil.
Hear My Song
Waking Ned Devine
Field of Dreams (but just the part where Costner’s character asks his Father: “Hey - Da- I mean, John? You want to have a catch?” Then I to switch it off real quick and go have some alone time). 
I’m TELLLLLLLLLIIIINNNGGGGG
Evil Dead II: Dead by Dawn. Gawd, I love Bruce Campbell in that. The dancing skeleton, too. And the scene where the hand that he cut off is attacking him, and he covers it with a bucket, then has to cover the bucket with a pile of books. And the top book is “A farewell to arms.” It just doesn’t get any better than that.
One of my favorite really awful movies is Redneck Zombies. It’s a Tromaville movie. Takes place on the Eastern Shore of Maryland, with some bozo smoking dope when he’s transporting “toxic chemical nuclear waste.” He loses a barrell, and a guy makes the barrell into a still. He distributes his moonshine to all his regulars, including a woman who’s giving her toddler a bath in the washing machine, and fills his bottle with moonshine. Many of the people have just gotten TV’s and have taken names from the Beverly Hillbillies, including a huge guy who keeps insisting on being called Ellie Mae. It’s a scream. Pretty gross if you can’t tell ham from human flesh, though.
I’m surprised no one has mentioned “The Attack of the Killer Tomatoes” yet!!! (or is that Tomatos??)
Mina Tannenbaum
Muriel’s Wedding
Dude, what number am I thinking of?
Gosh I can’t believe I left out:
Joe’s Apartment
This Is Spinal Tap
M
They Might Be Giants – George C. Scott & Joanne Woodward
Summer Wishes, Winter Dreams – Martin Balsam & Joanne Woodward
The Sterile Cookoo – Liza Minnelli
Mass Appeal – Jack Lemmon
The April Fools – Jack Lemmon
Charley – Cliff Robertson
The Owl And The Pussycat – George Segal and Barbara Streisand
Butterflies Are Free – Edward Albert and Goldie Hawn
There was also a counter-culture movie out that starred Elliott Gould and Candace Bergen. It coined the phrase, “There is no gravity; the earth sucks.” But I can’t recall the name right now.
All of these movies used to be on television as fillers for Sunday afternoons or at 2 a.m. I haven’t seen any of them for quite a while for some reason. 
Will O’Ban
The square root of 4761! Dude
The World According to Garp.
Getting Strait!!