Wicker Park scene makers have made Betty's, an unpretentious, low-key neighborhood tavern just south of Wicker Park in Ukrainian Village, their latest late-night destination. Part local watering hole, part biker bar, it's your typical pool-table and darts joint earlier in the evening, but Thursday through Saturday the bar transforms into a jam-packed venue for local bands and DJs. The action is in the back room, equipped with a stellar sound system and lots of mirrors.