Chris Kayser and Tess Malis Kincaid are not a couple off stage — much to the relief of Tess's husband Mark Kincaid, who's no slouch himself as a thespian. The fact that Kayser and Kincaid frequently performed opposite each other may not be a coincidence, as their interplay caused them both to up their game. As the title roles of Antony and Cleopatra at Actor's Express, they conveyed the charisma and entitlement of a 2,000-year-old celebrity couple. In the Alliance Theatre's August: Osage County, Kincaid took center stage as Barbara, the grown daughter of a pill-popping harridan (Brenda Bynum), and Keyser played Barbara's philandering estranged husband. The couple insightfully presented the mix of tenderness and cooled passions of a failed marriage. While Kayser's best 2011 performance was his turn as a depressed hippie in Horizon Theatre's Superior Donuts, his partnerships with Kincaid generate great chemistry even when their roles are at each other's throats.