Recent celebrity sightings at OpenTable restaurants… * LA Dodger Matt Kemp dined at Bluestem Brasserie in the Bay area. [Tablehopper] * Barbara Walters and other friends of the late Nora Ephron gathered to remember her at Manhattan’s Casa Lever. [NY Post] * Friends celebrated Zoe Saldana’s birthday at Indochine in New York. [NY Post] * Liza with a Z Minnelli was smokin’ — literally and figuratively — [...]