My Family (2000)

Ben Harper is a moderately successful family man and dentist. He is also undergoing a mid-life crisis and trying to cope with the bizarre reality of raising teenage children. His wife Susan seems quite happy, enjoys her job as a London tour guide, however at home her ability to find her way around a cookbook or pantry is less successful. Their three children Nick, Janey, and Michael are as different as chalk and cheese. Nick (19) is on his gap year, but doesn't get much further than the sofa or job centre, Janey is as sharp as a tack and 16 going on 25, while Michael is a very bright, computer-nerdish 12 year old who is just discovering girls.

Source: TMDb