"Faulty Father Figures " marathon today...
...4pm FXX.
"Lisa's Substitute" '91 Mr Bergstrom
"Saturdays of Thunder" '91 Homer takes fatherhood quiz..soapbox derby
"Brother from the Same Planet" '93 Bart/Homer enter Big Brothers program.
"Burns Heir" '94 Tis Bart
"The Latest Gun in the West" '02 Bart befriends Buck McCoy (played by the late Dennis Weaver)
"Fat Man and Little Boy" '04 Goose Gladwell
"Homer and Lisa Exchange Cross Words" '08 Homer bets against Lisa
"Exit through the Kwik E Mart" '12 Bart does graffiti to get back at Homer.
Some other episodes that could have made the cut are "Insane Clown Poppy" with Krusty's daughter.
Or "Home Sweet Homediddly Dum Doodly" when the Flandersses take over custody of Bart and Lisa. Technically Marge is also culpable (even though it was not really bad parenting). But Homer did seem to need the parenting class. "Put Garbage in garbage cans..Hmm...makes sense."