What do you think of Denny's Restaurant?

Racist!

Denny's is more of an late night or all night hangout for people who want to eat and congregate somewhere. I like it for that, but the good is hit or miss as you said. When it is good it is a nice surprise.

We used to have a chain in CA called Lyons which was a lot like Denny's. I think it was better than Denny's, but the same idea. It is better than going to a drive-thru like McD's and hanging around outside or in your cars.

Never been there

I haven't been there in decades, as there isn't one near me. I prefer Bob Evans and IHOP anyway.

😎

Denny's has been expanding into Canada and just opened one in my neighborhood. I will try it out.

My favorite thing to get there is the T-bone dinner (Medium Rare) with mashed potatoes and corn! The milkshakes are great, too!

When I think of Denny's, I think of IHOP, I think of Shari's (a regional thing? Idk). I remember hanging out in a Denny's for hours drinking coffee because I was having car trouble. They were nice enough to let us take up a booth for much of the afternoon. I'm surprised my GF didn't just put her head down on the table and crash. She did not have energy under adverse conditions.

But mostly I remember at one of our local Denny's the director Bob Rafelson directed Jack Nicholson and cast in the most famous scene in the movie Five Easy Pieces. Jack wants a Tuna Sandwich on Toast, hold the Butter. The waitress says there are No Substitutes. Jack asks again, and she states he cannot have this order. Finally he orders Tuna Salad with Toast on the side without Butter. Incredulous, she says you want Toast w/o Butter? He says Yes ! I want you to hold it between your KNEES! and proceeds to get pissed off.
I may have some small details wrong, but this does capture the gist of it. And it was filmed at our own little Denny's not 10 miles from here, Five Easy Pieces, (at least that scene was). I suspect the place hasn't changed much since then -- and it was a heck of a lot more than 20 years ago ! (Different thread.)

The menu looks interesting, especially the breakfast items.