Season 1

(Seasons 1-4) I don't really care how much of the show is scripted or not, the banter between Jack and Michael is actually some of the funniest on TV, and they do a broad enough variety of activities to keep it interesting, even if you're not really into to travel shows. First season is the strongest and gets weaker over time.

Humourous and light-hearted - Jack's dad is rather smutty, isn't he! Nothing special and you can tell that a lot of this is scripted, but it does what it says on the tin quite nicely.