I seldom make a trip to Vegas without a visit to BLT Burger.
The first reason is their hours. They are open late! The flights I get into Sin City often bring me in late and I don't get to the Strip until after 10pm. BLT Burger has always been there, waiting for me to start my night with a delicious burger before hitting the gaming floors.
I always get the BLT Burger -- it's their classic burger with bacon and some sort of sauce that has a mayo base. Adding cheese is like $2 (I think?) so I tend to skip that and use my $2 towards a drink. They recently expanded their wine list and I was pleased to see quite a few additions that I enjoy.
I'm also fond of sitting up at the bar because the "kitchen" is out in the open behind the bar, and I think it's fun to watch the kitchen-staff prepare the food.
Yum! Can't wait to go back.