I was recently YouTube-surfing and I came across a few old episodes of this series. "Aw," I thought, "A blast from my Gen X past!" I watched "Diff'rent Strokes" religiously as a kid, and I thought it'd be fun to see how it held up.
Good God, people, this was some bad TV.
Not sure what else to add. It's really just flabbergasting how bad it is. Every joke is hackneyed, every second is predictable. It's not offensive or anything, but it's just so... not... funny. The writers must've spent their days intentionally trying *not* to amuse themselves or anyone.
That said, there *was* a reason Gary Coleman was a star -- despite the painful dialogue, he had real personality, and alone among the actors, seemed to actually be having fun.