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It's Valentine's Day, and Lexie and Mark draw babysitting duty (for Meredith and Derek, and Callie and Arizona, respectively). Meanwhile, Ben shows Bailey that he knows her better than she thinks; and the ER also fills with romantics, including a 10-year-o (more…)
Let freedom ring at Paddy's! After an argument about constitutional rights and smoking in the bar, Mac and Dennis decide to lift all behavioral restrictions, and Paddy's soon goes wild. Meanwhile, Charlie and Dee head off to an antitobacco demonstration.
Mike feels like a stupid cupid when he realizes he forgot to make Valentine's Day dinner plans with Molly, but has no reservations about horning in on Carl's romantic evening of wining and dining his new girlfriend, Christina.