I didn't read every post, but a few notes...
I'm pretty sure I read that the entire Don Pablo's chain went under a few months back, so don't expect to see any of them left.
East Side Mario's...I worked at the first one they opened in Orlando, in fact I got to sample everything on the menu and it was all excellent...surprisingly they had really good hot wings too.
There's another italian restaurant that used to be on I-drive here in Orlando called Bertucci's...they had the best brick oven baked pizza I've ever had.
I also fondly remember Rax, I used to go there all the time as a kid. I remember York steakhouse, People's, Ryan's Steakhouse, Chi-Chi's, Casa Gallardo, Taco Tico, Victoria Station, Darryl's, Sizzler, Farrells, Foster's Hollywood (had a lot of great memories of the one in Altamonte Springs, FL)
Those who said Big Boy, they just opened one recently in Maitland (north of Orlando)