If you love Thai food and don't mind the longest lunch line-up in downtown Calgary then you should definitely try the Rose Garden Restaurant lunch buffet.
All the downtown business folks can't be wrong, for just under $15 dollars you get amazing all you can eat Thai food. It is a ridiculous price for what you eat, believe you me.
The Rose Garden is a tricky place to find even if it is on Stephan avenue, as you don't really expect it, but once you do find it, you have to go up the flight of stairs and you immediately get whisked away to a very elegantly exotic decorated restaurant. Here you will be welcomed by an assortment of Buddha's and by a busy but extremely friendly hostess.
Try to avoid sitting at the back area by the buffet, it can get really tight fitting there as people are going to get their groove on but if you don't mind that you are then in fact the closest to the buffet and how convenient for your second or third fill ups.
Some RG highlights: the Masatman Curry, the Garlic Squid, the Calamari, the Chicken Green Curry and the Pad Thai.
This is obviously one of my favourite Thai places to eat in the city; hopefully it will soon be yours as well.