The seventh season of "Home Improvement" (9 p.m.-9: 30 p.m., WMAR, Channel 2) opens with what the writers hope will be a new source of merriment for ensuing episodes: Tim's mid-life crisis.
Having run smack-dab into middle age, Tim (Tim Allen) is acting a little odd of late: using foreign phrases, talking about existentialism and promising to spring a "surprise" on his family when they take their annual vacation in the woods. The "surprise" doesn't sit all that well with Jill (Patricia Richardson), who's not sure the family's lives should be turned upside-down because Tim's started finding a few gray hairs on his head.


