Tomorrow (31 March 2012), the Riverside Municipal Airport will host its annual air show. There's nothing like a flock of high-performance aircraft to excite your inner child (or your outer children, should you have any). And, as is often happily the case with events in the area, admission is free. Parking costs $10, but you don't care about that, right?
Take RTA 13 or 15 to Arlington/Monroe. Bicyclists will find relatively easy access from Van Buren/Arlington and the Rutland exit of the SART.
More information at RiversideAirShow.com