The steampunk-ish bowling alley on the rapidly gentrifying York St not only has the coolest bowling in LA (you can literally see the gears move as you bowl) but an amazing cocktail menu and a killer burger. That said, support the old-school 'hood post-bowling by grabbing tacos from one of the local trucks -- and, if you want to make a night of it, head over to The Hi Hat for one of the best new live-music venues in LA after dinner.
Hit the Rain Room at LACMA
Though the museum says this exhibition (a room where it's raining everywhere but where you're standing) is completely sold out through the end of its run in January, they sell tickets at the door when there are no-shows -- and the lines should be far shorter this week than any other. Of course, if you don't get in, LACMA's got other great exhibits as well, so no harm-no-foul.