plus, jim responds to your tweets @jimcramer #madtweets. and your e-mails just ahead. all coming up on "mad money." don't miss a second of "mad money." follow @jimcramer on twitter. have a question? tweet cramer. #madtweets. send jim an e-mail to madmoney@cnbc.com. or give us a call at 1-800-743-cnbc. miss something? head to madmoney.cnbc.com. [ male announcer ] this december, remember --

>> i'll see unh and go with aetna. could close the coventry deal. let's go to tom in new jersey. tom. >> caller: big jim, how are you tonight? >> couldn't be better, thank you. what about you? >> caller: great. a big montclair state university boo-yah to you. >> how about the high school championship go to the championship tomorrow. coach liberato at the meadowlands 4:00 be there, boo-yah. >> caller: hovnanian, long? >> no. not going to buy hovnanian. not when kohl brothers htoll br unbelievable quarter and can't lift. rob in new jersey. >> caller: hi, jim. a sexy boo-yah to you from new york city. i love you and everything that you do on your show, and i subscribe to everything you have. >> yes! thank you! >> caller: you're welcome. a few months ago you mentioned merrimack pharmaceutical, mrck, as a good biotech stock. i'm in at age 50. what is your opinion -- >> i think you have to buy more. i feel very good about that.