The city of Cleveland has a lot of solid taco nights, but I'm gonna go out on a limb and say this is hands down the best. $0.75 for some of the best tacos (not just pub tacos) I've ever had and $1.50 outrageously good empanadas. They usually have 7 or 8 different meats or flavors, each with a very distinct, delicious taste. Grumpy likes to mix in a few specials on top of the menu staples which I always go out of my way to try, and have never disappointed.
They're wing is no joke either. $3 for a pound of wings and all they're sauces and rubs are home made and are top notch.
Throw in $5 liters of good german beer and you've got a can't miss situation.