If you live and breathe in Toronto and are a fan of music, you must check out the El Mo at some point.
(Side note: I know how tired it is to ask someone if they like music. Everyone likes music. I just didn't want to start with: go check out their website and if you like the set list, you can't pass on The El Mocambo!)
My point is, the El Mo is a venue that's been around since the 50's. Everyone from Marilyn Monroe to Black Flag has made an appearance there; it's a true piece of T.O history. As such, if you live in this city or are visiting, it's a spot that has some great shows that is worth checking out.
Other good points: the cover charge is consistently lower than other concert venues, and while it has gone through a reno, still has the intimate feel lacking from other bigger places.