Trying to get caught up:
Waffle House: Ugh. Went to one before Colorado banned smoking and the entire place reeked of smoke. Even though they had "non smoking" tables, the place is so small, you can't get away from it. Went back a year or so after smoking was banned, but the place still stunk and seeing the menu prices made me smoke inside...lol. We have four or five in my town.
Five Guys: Love them, but pretty expensive. You'll easily spend ten bucks (in our area, anyway) if you get the standard burger, fries, coke. I prefer Culver's, which is a Wisconsin chain that is expanding, and Freddy's, which is a Kansas brand that just came to our area. Both are very reasonably priced and the burgers and other menu items are awesome.
Many of us ex-Cali people used to crave and petiton In-N-Out to move here to Colorado, but since Culver's and Freddy's moved here, the movement has almost died. Trader Joe's is finally opening stores in Colorado, however.