The BK series never fails to deliver!
It is in fairness a very simple game in comparison to Banjo Tooie but it's still very addictive collecting things and the plot seems to be very good although very mario-like. Which is probably why I like it so much.
You can finish the lot & probably collect everything in 6 hours tops but it's a well spent 6 hours but there are a few drawsbacks mainly the camera angle gets in the way a lot and tends to be very annoying & the amount of moves you obtain in comparison to Banjo Tooie isn't very many.
The best parts for me are the characters that are portrayed and the little mini games you play to earn jiggies some can be challenging but still easy enough for good gamers.
But all in all extremely worthwhile & worth the buy.