Brian Eno's visual imagescape 77 million paintings premiers tonight at Yerba Buena with a 45-foot wall of projections of changing images set to an evolving soundscape. Tickets are $25 unless you're a student or senior. No word on whether Eno will be there...but it seems worth it all the same. 701 Mission St., SF. Other haps: Cyndi Lauper, Erasure, Debbie Harry plus host Margaret Cho at the Greek Theater in Berkeley at 7pm. Feel......