Things to see, do and eat between Houston and Panama City?

[cornflakes]

Hey all, I will be driving out in May to attend a wedding in the Florida Panhandle. I'd like to make the drive in one long day ( I may take longer on the way back, and I'd like to take time for at least a quick stop in New Orleans, considering that I haven't visited yet.) I'd also like to make a few quick stops along the way. Does anyone have any suggestions for sights, food or anything that is worth a stop but won't take more than an hour or two?