If you are like me this week, you have no time to stroll through Chelsea for unexpected wonders. You have to cook and clean and great ready for the holidays - or maybe not. Maybe you are going to be a guest. Congratulations - you are in luck. Now hurry, please, to Cristin Tierney's gallery for the last day of "Yorgo Alexopoulos: Transmigrations," a wondrous video installation packed with images from photos, drawings, paintings and video on 24 flat-screen monitors. Inspired by Jennifer Bartlett's Rhapsody, a 987-enamel plate installation from 1976 (perhaps one of her best known works), Alexopoulos brings a new dynamic to the grid aesthetic. Here his quick succession of images plunge us into worlds that touch on nature, fantasy and the beyond - a sort of digital meets spiritual. We float, we fly, we soar through innumerable realms of visual splendor.