I like Jack's, and as some other people mentioned, it's a pretty standard chain restaurant with quite consistent meals, presentation, service etc.
To the person who posted about the veggie burger, I was told they're not cooked near the beef burgers (I don't think anywhere remotely nice does that anymore, due to so many veggies or people with religious beliefs that don't eat beef) BUT the bun has egg in it, there's honey in the BBQ sauce and the mushrooms are apparently cooked in anchovy paste. That last tidbit was a real shocker to me, but they were very accommodating when I asked for it sans BBQ sauce and plain 'shrooms on the side.
For anyone who drinks, I highly recommend the mango sapphire Jackarita, delicious!