An absolutely fantastic series! Ignore the critics and check it out. As others have already said, not strictly a sit-com, but that isn't a bad thing. It feels far more 'adult' than a sit-com - if that makes any sense - and the acting from all three main leads is brilliant. Matt LeBlanc is especially good, throwing in more than the odd reference to Friends and 'Joey' - which, as a masssive Friends fan (don't let that fact influence your opinion of this review) made me smile.
Really, really good show - strong performances, shot beautifully, and great story/character development.