TV Highlights: Fitting for July 4 week -- 'BBQ Crawl' and 'Donut Showdown'

It's the first live eviction on "Big Brother" (CBS at 8 p.m.) as one houseguest is sent packing, guaranteeing that the drama and fights will quickly escalate. The remaining 13 chefs get a surprise visit from Season 3 champion Christine Ha on "Masterchef" (Fox at 8), but first, they must complete a challenge involving a complicated mystery ingredient.