We have been here quite a few times and have always had an absolute blast! The Bad News Blues Band is our favorite, but I hear all the bands are really good. They even have hip hop nights, which I would assume would be pretty interesting. This isn't you "typical" hired band place. These groups fit this place perfectly and have some awesome original material.
Char's is SMALL. Arrive early if you want a table. The charm of Char's is that they haven't really updated anything. The tables are old, the bands stand on the floor, and the decor is aged. Normally, this would bother me, but in this case it just works. It keeps the "feel". There is a patio out front and usually you can have some nice conversations with the band members on their breaks.
There is lots of dancing to the music and upbeat feel all around. You can hear laughing and just look about and see how much fun everyone is having.
There is a cheap cover at the door (expected considering the live band). The drinks aren't cheap, but won't break your wallet too badly.
It's a place I think everyone should experience. Let your hair down, go and have fun. It is VERY loud, so don't arrive expecting to have a lot of conversation, because it ain't gonna happen. (Maybe good if you go with someone you don't so much enjoy talking with :)).
A true staple of midtown Phoenix.