I frequented a number of other breakfast spots in Calgary such as Nellie's and The Loop for years, but Galaxie has eclipsed them all.
Every time I've come here, there's been a line out the door (not that there's any standing room inside), and thankfully the staff brings coffee to everyone waiting. Even with the long lines, it is absolutely worth the wait. The food is spectacular, and I can definitely say I haven't had a tastier or more filling breakfast anywhere in the city. The prices are a couple bucks higher than other comparable places, but most of the meals come with bottomless hashbrowns. Not that you'll really need more food on your plate.
My personal favourite is the Montreal smoked meat hash made with smoked meat that I assume comes from the deli next door. Despite the crowds, the staff is always friendly and attentive.