I just found out about a good looking burger place in Kensington Market called Burger Bar. Their menu isn't entirely gluten-free, but they offer gluten-free buns for the burgers, and some great sounding appetizers. Here's their website, which shows the GF items on the menu: http://www.theburgerbar.ca/
Also, there's a 50% off deal available online for anyone who wants to try it cheaper. You can buy the coupons here: http://bit.ly/blJ09Q
I'll be checking it out next week and will let you all know how it is.