Thunder crunch is what I come to Olivers for. As the name suggests, the burger patty is super cruncky. Olivers is very spacious. There are usually lots of seats available both inaide and outside.
Usually schools just have big fast food places but these places are pretty good for what they offer. Olivers has some pretty slow service so don't go there if you don't have any time.
The fact that Carleton has a wonderful, Uni directed restaurant like Roosters makes it a better school. Its food is actually good, the coffee is great and the staff work together really efficiently and quickly to get everyone's order in.