Round One to the Hot Crazy Chick (S01E15)

Charlie and Alan find Frankie (recurring guest star Jenna Elfman), a sexy but seemingly crazy woman, hitting a car with a baseball bat. Despite Alan's warnings, Charlie becomes totally infatuated with her. After they make a quick getaway from the parking garage where Alan accidentally set off the smashed car's alarm system, Charlie brings Frankie back to his Malibu home. Alan, wary of her at first, reconsiders when she compliments his career as a chiropractor. But the two brothers, both competing for her attention, are taken aback by a secret that she's been hiding. (Warner Bros. UK)