What's going on in St. Louis this weekend?

I'll be hitting at least two of these events, though I'll probably end up at at least three of them before the weekend is over.

St. Louis County Fair and Air Show (I'll be there to take photos and relive being a kid)

The Gateway Cup (I'll be there taking photos of some friends racing)

Gateway To Nationals (I should be racing, but am not this year)

Midwest Z Fest (If I had the 73 ready I'd go)

I'm sure there's plenty of other events going on, feel free to post up your own for this weekend in St. Louis