The place next to Electric Shadows is Babar's and it's fantastic for pizza. They large ones aren't cheaps, but they'll feed at least two, maybe three people, and really good quality toppings. Really awesome.
I also recomend the banquets from the Turkish place on Barry Drive (near the corner of Barry and Northbourne) - $20 per person, but it'll last two meals and its awesome.
Freketes (not sure of spelling) is the Ethiopian place in Dickson and they food is brilliant. if you've never tried it before, give it a go.
Copurnica Bakery in Mort Street, Braddon, is awesome for breakfast/pastires/bread. Cheses and Spinach bread is so damn good, as is their brie and broccoli quiche.
The Gods is always awesome, best coffee and atmosphere on campus and good food too, if you can afford it. Breaky is less pricey than the rest of the food, and pretty damn good too - try the bircher museli or the Clifford Stack. And as someone already said, Purple Pickle does reasonable burgers at a reasonable price.
Beligun Beer Cafe in Kingston is fantastic if you can make it over there. Pricey, but the best beer battered chips you will ever taste, and not to mention all the beer!
There are some great restaraunts in Manuka too, and some not as expensive as you would think. Guava is a really nice little Vietnamese place, and Thai Corner is always fast, tasty and aforable. Bellucci's is also great if you want to splurge a little (there is also one in Dickson) - if they have chilli and passionfruit pana cotta on the speacials board, you haev to give it a go, its amazing.
Man, I could go on and on... I think maybe I eat out too often...