Fri.–Sat., Aug. 5–6, 8 p.m.
Bayfront Theatre, Bldg. B, Fort Mason Center
In this popular yearly Theatresports Grudge Match, S.F. and L.A. (Aug. 5) for the Improv Cup; Spontaneous Broadway features both teams in creating Broadway’s next musical. Both are based on audience participation. $20, 415-474-6776, improv.org
