Steve Wozniak’s Surprise Birthday Party, in Photos

The hottest event in San Francisco tonight is a birthday party.

Why? The birthday boy is Steve Wozniak.

Fusion-io, where Woz is chief scientist, planned the party as a surprise for the Apple co-founder at San Francisco’s Yerba Buena Center for the Arts. Guests secretly invited to the museum received pink boas, noisemakers, and a chance to test their skills on Tetris — a Woz favorite.

The word from the party is that, despite the social-media-happy crowd, it remained a surprise. One drunk tweet or text message supposedly popped up last night, but Woz’s wife deleted it from all of her husband’s many phones and gadgets.

AllThingsD’s Ina Fried and Mike Isaac are there, and sent us these photos: