The SFIFF is winding down - only two more days to cram in as much international film as you can! Or are you ready for a quick breather before diving back in? Then take a night off and head out to one of these happenin' events.

Not exactly a face-off (these guys play for the same league), but bound to be just as interesting. Marion Nestle and Michael Pollan give a talk tonight on food issues, from the perspective of both a scientist and consumer, as part of the City Arts & Lectures series. Herbst Theatre, 401 Van Ness, SF.

Keeping with the smarty pants parties - head over to the Diesel bookstore in Oakland for a discussion on the book Things Fall Apart, by Chinua Achebe. Book groups are always free and start at 7 pm. 5433 College Avenue, Oakland.

Come Ask a Scientist anything and everything you ever wanted to know about Axis Cafe & Gallery, 1201 Eighth Street, SF.

Pink Floyd + Trannyshack = an event you don't wanna miss! The theatrical extravaganza interpretation of The Wall at Trannyshack starts around midnight. Hosted by Heklina, $8 cover. The Stud, 399 Ninth Street, SF.

SFist Jenna, contributing.