Ruth Robbins-Phillips is as brash and entertaining as the character she portrays, the outsized Mame Dennis in this musical by Jerry Herman. It's not his best work (read: Hello Dolly!), but it surely is hers. F, Sa 8pm; Su 2pm. Through 11/16. $18-$25. Runaway Stage Productions at the 24th Street Theatre, 2791 24th St.; (916) 207-1226; www.runawaystage.com.