First book - good. Second book - okay. Third book - readable. Fourth book - tripe. That's that trilogy in four parts summed up for you. No charge.
I think Bill Nighy is going to be in the film, so it should be worth watching. It's nearly finished, by all accounts.
You want to try a bit of 'Red Dwarf'. Apart from the last 2 series, you can't go wrong.
I agree to Flahman and would like to add that
the 5th book is better than number 3 and 4.
Never saw the film, think its too difficult
to make it really good.